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Color Screen 2.0 Parameter Fields
github-actions[bot] edited this page Oct 21, 2026
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This field catalogue is derived directly from the checked-in JSON Schema doc/parameters-schema-v3.json (JSON Schema draft 2020-12). It lists all 249 schema field/variant occurrences, including nested array records and alternative object shapes.
Read this alongside the parameter format overview. Schema constraints describe types, required members and structural restrictions. The libcolorscreen reader also checks numeric finiteness, relationships between fields, IDs, source provenance, screen geometry and resource budgets. Conversely, UI slider ranges are not necessarily reader-enforced limits. The column Required is relative to the immediate containing object and conditional variants, not necessarily mandatory in every top-level document.
- Root identity:
"format": "org.colorscreen.parameters"and"schema_version": 3. - New parameter files are plain UTF-8 JSON. A historical
.parfile is imported through the legacy reader; it is not JSON. -
source_imageis optional (or null) and identifies an external file; image pixels are not embedded. - Unless the schema explicitly allows additional members, the C++ schema-3 reader may reject unknown fields. Prefer saving with the application for canonical form.
| Field path | Type | Required | Variant | Structural constraints | Description |
|---|---|---|---|---|---|
format |
constant | Yes | — | exactly org.colorscreen.parameters | — |
schema_version |
constant | Yes | — | exactly 3 | — |
| Field path | Type | Required | Variant | Structural constraints | Description |
|---|---|---|---|---|---|
source_image |
one of 2 variants | No | — | — | Optional external scan or stitched project linked to this document. Null means reusable parameters; the original scan is not embedded. |
source_image.path |
string | Yes | oneOf 2 | string length ≥ 1 | — |
source_image.base |
enumeration | Yes | oneOf 2 | one of absolute, parameter_file | — |
source_image.width_px |
integer | Yes | oneOf 2 | ≥ 1 | — |
source_image.height_px |
integer | Yes | oneOf 2 | ≥ 1 | — |
source_image.size_bytes |
integer | Yes | oneOf 2 | ≥ 0 | — |
| Field path | Type | Required | Variant | Structural constraints | Description |
|---|---|---|---|---|---|
capture |
object | Yes | — | no unknown members | — |
capture.type |
string | Yes | — | string length ≥ 1 | — |
capture.raw |
object | Yes | — | no unknown members | — |
capture.raw.demosaic |
string | Yes | — | string length ≥ 1 | — |
capture.linearization |
one of 2 variants | Yes | — | — | — |
capture.linearization.mode |
constant | Yes | oneOf 1 | exactly srgb | — |
capture.linearization.mode |
constant | Yes | oneOf 2 | exactly power | — |
capture.linearization.exponent |
number | Yes | oneOf 2 | — | — |
capture.orientation |
object | Yes | — | no unknown members | — |
capture.orientation.quarter_turns |
integer | Yes | — | — | — |
capture.orientation.mirror |
boolean | Yes | — | — | — |
capture.bounds |
object | Yes | — | no unknown members | — |
capture.bounds.object_crop |
any of 2 variants | Yes | — | — | — |
capture.bounds.object_crop.x_px |
integer | Yes | anyOf 2 | — | — |
capture.bounds.object_crop.y_px |
integer | Yes | anyOf 2 | — | — |
capture.bounds.object_crop.width_px |
integer | Yes | anyOf 2 | ≥ 1 | — |
capture.bounds.object_crop.height_px |
integer | Yes | anyOf 2 | ≥ 1 | — |
capture.bounds.photograph |
any of 2 variants | Yes | — | — | — |
capture.bounds.photograph.x_px |
integer | Yes | anyOf 2 | — | — |
capture.bounds.photograph.y_px |
integer | Yes | anyOf 2 | — | — |
capture.bounds.photograph.width_px |
integer | Yes | anyOf 2 | ≥ 1 | — |
capture.bounds.photograph.height_px |
integer | Yes | anyOf 2 | ≥ 1 | — |
capture.levels |
object | Yes | — | no unknown members | — |
capture.levels.gain |
number | Yes | — | — | — |
capture.levels.black_offset |
number | Yes | — | — | — |
| Field path | Type | Required | Variant | Structural constraints | Description |
|---|---|---|---|---|---|
process |
object | Yes | — | no unknown members | — |
process.screen |
object | Yes | — | no unknown members | — |
process.screen.type |
string | Yes | — | string length ≥ 1 | — |
process.screen.strip_widths |
object | Yes | — | no unknown members | — |
process.screen.strip_widths.red |
one of 2 variants | Yes | — | — | — |
process.screen.strip_widths.red.mode |
constant | Yes | oneOf 1 | exactly automatic | — |
process.screen.strip_widths.red.mode |
constant | Yes | oneOf 2 | exactly fraction | — |
process.screen.strip_widths.red.value |
number | Yes | oneOf 2 | — | — |
process.screen.strip_widths.green |
one of 2 variants | Yes | — | — | — |
process.screen.strip_widths.green.mode |
constant | Yes | oneOf 1 | exactly automatic | — |
process.screen.strip_widths.green.mode |
constant | Yes | oneOf 2 | exactly fraction | — |
process.screen.strip_widths.green.value |
number | Yes | oneOf 2 | — | — |
process.color_model |
string | Yes | — | string length ≥ 1 | — |
process.dyes |
object | Yes | — | no unknown members | — |
process.dyes.aging_fraction |
array | Yes | — | array length ≥ 3; array length ≤ 3 | — |
process.dyes.density |
array | Yes | — | array length ≥ 3; array length ≤ 3 | — |
process.contact_copy |
object | Yes | — | no unknown members | — |
process.contact_copy.simulate |
boolean | Yes | — | — | — |
process.contact_copy.preflash |
number | Yes | — | — | — |
process.contact_copy.exposure |
number | Yes | — | — | — |
process.contact_copy.boost |
number | Yes | — | — | — |
process.contact_copy.emulsion_curve |
object | Yes | — | no unknown members | — |
process.contact_copy.emulsion_curve.min |
array | Yes | — | array length ≥ 2; array length ≤ 2 | — |
process.contact_copy.emulsion_curve.linear1 |
array | Yes | — | array length ≥ 2; array length ≤ 2 | — |
process.contact_copy.emulsion_curve.linear2 |
array | Yes | — | array length ≥ 2; array length ≤ 2 | — |
process.contact_copy.emulsion_curve.max |
array | Yes | — | array length ≥ 2; array length ≤ 2 | — |
| Field path | Type | Required | Variant | Structural constraints | Description |
|---|---|---|---|---|---|
geometry |
object | Yes | — | no unknown members | — |
geometry.imaging_model |
string | Yes | — | string length ≥ 1 | — |
geometry.mapping |
object | Yes | — | no unknown members | — |
geometry.mapping.center |
array | Yes | — | array length ≥ 2; array length ≤ 2 | — |
geometry.mapping.axis_x |
array | Yes | — | array length ≥ 2; array length ≤ 2 | — |
geometry.mapping.axis_y |
array | Yes | — | array length ≥ 2; array length ≤ 2 | — |
geometry.mapping.projection_distance |
number | Yes | — | — | — |
geometry.mapping.tilt |
array | Yes | — | array length ≥ 2; array length ≤ 2 | — |
geometry.final_frame |
object | Yes | — | no unknown members | — |
geometry.final_frame.rotation |
number | Yes | — | — | — |
geometry.final_frame.mirror |
boolean | Yes | — | — | — |
geometry.final_frame.angle_deg |
number | Yes | — | — | — |
geometry.final_frame.axis_length_ratio |
number | Yes | — | > 0 | — |
geometry.lens |
object | Yes | — | no unknown members | — |
geometry.lens.radial |
array | Yes | — | array length ≥ 4; array length ≤ 4 | — |
geometry.lens.center |
array | Yes | — | array length ≥ 2; array length ≤ 2 | — |
geometry.mesh |
any of 2 variants | Yes | — | — | — |
geometry.mesh.direction |
enumeration | Yes | anyOf 2 | one of screen-to-image, image-to-screen | — |
geometry.mesh.shift |
array | Yes | anyOf 2 | array length ≥ 2; array length ≤ 2 | — |
geometry.mesh.step |
array | Yes | anyOf 2 | array length ≥ 2; array length ≤ 2 | — |
geometry.mesh.dimensions |
array | Yes | anyOf 2 | array length ≥ 2; array length ≤ 2 | — |
geometry.mesh.points |
array | Yes | anyOf 2 | — | — |
geometry.mesh.points[] |
array | Yes | anyOf 2 | array length ≥ 2; array length ≤ 2 | — |
| Field path | Type | Required | Variant | Structural constraints | Description |
|---|---|---|---|---|---|
registration |
object | Yes | — | no unknown members | — |
registration.detection |
object | Yes | — | no unknown members | — |
registration.detection.red |
array | Yes | — | array length ≥ 3; array length ≤ 3 | — |
registration.detection.green |
array | Yes | — | array length ≥ 3; array length ≤ 3 | — |
registration.detection.blue |
array | Yes | — | array length ≥ 3; array length ≤ 3 | — |
registration.detection.black |
array | Yes | — | array length ≥ 3; array length ≤ 3 | — |
registration.detection.min_luminosity |
number | Yes | — | — | — |
registration.detection.min_ratio |
number | Yes | — | — | — |
registration.fit |
object | Yes | — | no unknown members | — |
registration.fit.optimize_lens |
boolean | Yes | — | — | — |
registration.fit.lens_center_distance |
number | Yes | — | — | — |
registration.fit.optimize_tilt |
boolean | Yes | — | — | — |
registration.points |
array | Yes | — | — | — |
registration.points[] |
object | Yes | — | no unknown members | — |
registration.points[].image |
array | Yes | — | array length ≥ 2; array length ≤ 2 | — |
registration.points[].screen |
array | Yes | — | array length ≥ 2; array length ≤ 2 | — |
registration.points[].color |
string | Yes | — | string length ≥ 1 | — |
| Field path | Type | Required | Variant | Structural constraints | Description |
|---|---|---|---|---|---|
calibration |
object | Yes | — | no unknown members | — |
calibration.capture |
object | Yes | — | no unknown members | — |
calibration.capture.mtf |
object | Yes | — | no unknown members | — |
calibration.capture.mtf.model |
enumeration | Yes | — | one of automatic, physical-diffraction, empirical-fallback | — |
calibration.capture.mtf.sigma_px |
number | Yes | — | — | — |
calibration.capture.mtf.halo_fraction |
number | Yes | — | — | — |
calibration.capture.mtf.halo_sigma_px |
number | Yes | — | — | — |
calibration.capture.mtf.blur_diameter_px |
number | Yes | — | — | — |
calibration.capture.mtf.defocus_mm |
number | Yes | — | — | — |
calibration.capture.mtf.f_stop |
number | Yes | — | — | — |
calibration.capture.mtf.pixel_pitch_um |
number | Yes | — | — | — |
calibration.capture.mtf.sensor_fill_factor |
number | Yes | — | — | — |
calibration.capture.mtf.scan_dpi |
number | Yes | — | — | — |
calibration.capture.mtf.wavelengths_nm |
array | Yes | — | array length ≥ 4; array length ≤ 4 | — |
calibration.capture.mtf.selected_measurement_id |
any of 2 variants | Yes | — | — | — |
calibration.capture.mtf.sample_columns |
constant | Yes | — | exactly frequency_cycles_per_pixel,contrast_percent,uncertainty_percentage_points | — |
calibration.capture.mtf.measurements |
array | Yes | — | array length ≤ 256 | — |
calibration.capture.mtf.measurements[] |
object | Yes | — | no unknown members | — |
calibration.capture.mtf.measurements[].id |
string | Yes | — | string length ≥ 1 | — |
calibration.capture.mtf.measurements[].capture_group_id |
string | Yes | — | string length ≥ 1 | — |
calibration.capture.mtf.measurements[].channel |
enumeration | Yes | — | one of unknown, red, green, blue, ir | — |
calibration.capture.mtf.measurements[].image_layer |
boolean | Yes | — | — | — |
calibration.capture.mtf.measurements[].wavelength_nm |
number | Yes | — | — | — |
calibration.capture.mtf.measurements[].label |
string | Yes | — | — | — |
calibration.capture.mtf.measurements[].source |
object | Yes | — | no unknown members | — |
calibration.capture.mtf.measurements[].source.path |
any of 2 variants | Yes | — | — | — |
calibration.capture.mtf.measurements[].source.path.base |
enumeration | Yes | anyOf 2 | one of absolute, parameter_file | — |
calibration.capture.mtf.measurements[].source.path.value |
string | Yes | anyOf 2 | string length ≥ 1 | — |
calibration.capture.mtf.measurements[].source.dimensions |
one of 2 variants | Yes | — | — | — |
calibration.capture.mtf.measurements[].source.dimensions.status |
constant | Yes | oneOf 1 | exactly available | — |
calibration.capture.mtf.measurements[].source.dimensions.width_px |
integer | Yes | oneOf 1 | ≥ 1 | — |
calibration.capture.mtf.measurements[].source.dimensions.height_px |
integer | Yes | oneOf 1 | ≥ 1 | — |
calibration.capture.mtf.measurements[].source.dimensions.status |
constant | Yes | oneOf 2 | exactly unavailable | — |
calibration.capture.mtf.measurements[].source.dimensions.legacy_values |
array | Yes | oneOf 2 | array length ≥ 2; array length ≤ 2 | — |
calibration.capture.mtf.measurements[].source.roi |
one of 2 variants | Yes | — | — | — |
calibration.capture.mtf.measurements[].source.roi.status |
constant | Yes | oneOf 1 | exactly available | — |
calibration.capture.mtf.measurements[].source.roi.x_px |
integer | Yes | oneOf 1 | — | — |
calibration.capture.mtf.measurements[].source.roi.y_px |
integer | Yes | oneOf 1 | — | — |
calibration.capture.mtf.measurements[].source.roi.width_px |
integer | Yes | oneOf 1 | ≥ 1 | — |
calibration.capture.mtf.measurements[].source.roi.height_px |
integer | Yes | oneOf 1 | ≥ 1 | — |
calibration.capture.mtf.measurements[].source.roi.status |
constant | Yes | oneOf 2 | exactly unavailable | — |
calibration.capture.mtf.measurements[].source.roi.legacy_values |
array | Yes | oneOf 2 | array length ≥ 4; array length ≤ 4 | — |
calibration.capture.mtf.measurements[].source.edge_points_px |
array | Yes | — | array length ≥ 2; array length ≤ 2 | — |
calibration.capture.mtf.measurements[].edge_quality |
object | Yes | — | no unknown members | — |
calibration.capture.mtf.measurements[].edge_quality.angle_deg |
number | Yes | — | — | — |
calibration.capture.mtf.measurements[].edge_quality.fit_rms_px |
number | Yes | — | — | — |
calibration.capture.mtf.measurements[].edge_quality.contrast_fraction |
number | Yes | — | — | — |
calibration.capture.mtf.measurements[].edge_quality.snr |
number | Yes | — | — | — |
calibration.capture.mtf.measurements[].edge_quality.phase_coverage_fraction |
number | Yes | — | — | — |
calibration.capture.mtf.measurements[].samples |
array | Yes | — | array length ≤ 1000000 | — |
calibration.capture.mtf.measurements[].samples[] |
array | Yes | — | array length ≥ 3; array length ≤ 3 | — |
calibration.capture.scanner_primaries_xyz |
object | Yes | — | no unknown members | — |
calibration.capture.scanner_primaries_xyz.red |
— | Yes | — | — | — |
calibration.capture.scanner_primaries_xyz.green |
— | Yes | — | — | — |
calibration.capture.scanner_primaries_xyz.blue |
— | Yes | — | — | — |
calibration.process_color |
object | Yes | — | no unknown members | — |
calibration.process_color.profile_rgb |
object | Yes | — | no unknown members | — |
calibration.process_color.profile_rgb.dark |
array | Yes | — | array length ≥ 3; array length ≤ 3 | — |
calibration.process_color.profile_rgb.red |
array | Yes | — | array length ≥ 3; array length ≤ 3 | — |
calibration.process_color.profile_rgb.green |
array | Yes | — | array length ≥ 3; array length ≤ 3 | — |
calibration.process_color.profile_rgb.blue |
array | Yes | — | array length ≥ 3; array length ≤ 3 | — |
calibration.process_color.spots |
array | Yes | — | — | — |
calibration.process_color.spots[] |
array | Yes | — | array length ≥ 2; array length ≤ 2 | — |
calibration.flat_field |
object | Yes | — | no unknown members | — |
calibration.flat_field.black_correction |
number | Yes | — | — | — |
calibration.flat_field.grid |
any of 2 variants | Yes | — | — | — |
calibration.flat_field.grid.dimensions |
array | Yes | anyOf 2 | array length ≥ 2; array length ≤ 2 | — |
calibration.flat_field.grid.channels |
array | Yes | anyOf 2 | array length ≥ 4; array length ≤ 4 | — |
calibration.flat_field.grid.black_correction |
boolean | Yes | anyOf 2 | — | — |
calibration.flat_field.grid.luminosities |
array | Yes | anyOf 2 | — | — |
calibration.flat_field.grid.luminosities[] |
array | Yes | anyOf 2 | array length ≥ 4; array length ≤ 4 | — |
calibration.flat_field.grid.subtractions |
array | Yes | anyOf 2 | — | — |
calibration.flat_field.grid.subtractions[] |
array | Yes | anyOf 2 | array length ≥ 4; array length ≤ 4 | — |
calibration.spatial_blur |
any of 2 variants | Yes | — | — | — |
calibration.spatial_blur.mode |
string | Yes | anyOf 2 | string length ≥ 1 | — |
calibration.spatial_blur.dimensions |
array | Yes | anyOf 2 | array length ≥ 2; array length ≤ 2 | — |
calibration.spatial_blur.values |
array | Yes | anyOf 2 | — | — |
calibration.spatial_blur.values[] |
number | Yes | anyOf 2 | — | — |
calibration.tiles |
object | Yes | — | no unknown members | — |
calibration.tiles.dimensions |
array | Yes | — | array length ≥ 2; array length ≤ 2 | — |
calibration.tiles.adjustments |
array | Yes | — | — | — |
calibration.tiles.adjustments[] |
object | Yes | — | no unknown members | — |
calibration.tiles.adjustments[].exposure |
number | Yes | — | — | — |
calibration.tiles.adjustments[].dark_point |
number | Yes | — | — | — |
calibration.tiles.adjustments[].scanner_blur |
any of 2 variants | Yes | — | — | — |
calibration.tiles.adjustments[].scanner_blur.mode |
string | Yes | anyOf 2 | string length ≥ 1 | — |
calibration.tiles.adjustments[].scanner_blur.dimensions |
array | Yes | anyOf 2 | array length ≥ 2; array length ≤ 2 | — |
calibration.tiles.adjustments[].scanner_blur.values |
array | Yes | anyOf 2 | — | — |
calibration.tiles.adjustments[].scanner_blur.values[] |
number | Yes | anyOf 2 | — | — |
| Field path | Type | Required | Variant | Structural constraints | Description |
|---|---|---|---|---|---|
reconstruction |
object | Yes | — | no unknown members | — |
reconstruction.image_layer |
object | Yes | — | no unknown members | — |
reconstruction.image_layer.ignore_infrared |
boolean | Yes | — | — | — |
reconstruction.image_layer.rgb_mixer |
object | Yes | — | no unknown members | — |
reconstruction.image_layer.rgb_mixer.weights |
array | Yes | — | array length ≥ 3; array length ≤ 3 | — |
reconstruction.image_layer.rgb_mixer.black_offsets |
array | Yes | — | array length ≥ 3; array length ≤ 3 | — |
reconstruction.collection |
object | Yes | — | no unknown members | — |
reconstruction.collection.quality |
string | Yes | — | string length ≥ 1 | — |
reconstruction.collection.threshold |
number | Yes | — | — | — |
reconstruction.color_field |
object | Yes | — | no unknown members | — |
reconstruction.color_field.screen_demosaic |
string | Yes | — | string length ≥ 1 | — |
reconstruction.color_field.resampling |
string | Yes | — | string length ≥ 1 | — |
reconstruction.color_field.screen_blur_radius |
number | Yes | — | — | — |
reconstruction.denoise |
object | Yes | — | no unknown members | — |
reconstruction.denoise.before_reconstruction |
object | Yes | — | no unknown members | — |
reconstruction.denoise.before_reconstruction.mode |
string | Yes | — | string length ≥ 1 | — |
reconstruction.denoise.before_reconstruction.strength |
number | Yes | — | — | — |
reconstruction.denoise.before_reconstruction.noise_variance_floor |
number | Yes | — | — | — |
reconstruction.denoise.before_reconstruction.noise_variance_slope |
number | Yes | — | — | — |
reconstruction.denoise.before_reconstruction.patch_radius |
integer | Yes | — | — | — |
reconstruction.denoise.before_reconstruction.search_radius |
integer | Yes | — | — | — |
reconstruction.denoise.before_reconstruction.bilateral_sigma_s |
number | Yes | — | — | — |
reconstruction.denoise.before_reconstruction.bilateral_sigma_r |
number | Yes | — | — | — |
reconstruction.denoise.after_reconstruction |
object | Yes | — | no unknown members | — |
reconstruction.denoise.after_reconstruction.mode |
string | Yes | — | string length ≥ 1 | — |
reconstruction.denoise.after_reconstruction.strength |
number | Yes | — | — | — |
reconstruction.denoise.after_reconstruction.noise_variance_floor |
number | Yes | — | — | — |
reconstruction.denoise.after_reconstruction.noise_variance_slope |
number | Yes | — | — | — |
reconstruction.denoise.after_reconstruction.patch_radius |
integer | Yes | — | — | — |
reconstruction.denoise.after_reconstruction.search_radius |
integer | Yes | — | — | — |
reconstruction.denoise.after_reconstruction.bilateral_sigma_s |
number | Yes | — | — | — |
reconstruction.denoise.after_reconstruction.bilateral_sigma_r |
number | Yes | — | — | — |
reconstruction.sharpening |
object | Yes | — | no unknown members | — |
reconstruction.sharpening.mode |
string | Yes | — | string length ≥ 1 | — |
reconstruction.sharpening.unsharp |
object | Yes | — | no unknown members | — |
reconstruction.sharpening.unsharp.radius |
number | Yes | — | — | — |
reconstruction.sharpening.unsharp.amount |
number | Yes | — | — | — |
reconstruction.sharpening.scanner |
object | Yes | — | no unknown members | — |
reconstruction.sharpening.scanner.snr |
number | Yes | — | — | — |
reconstruction.sharpening.scanner.mtf_scale |
number | Yes | — | — | — |
reconstruction.sharpening.richardson_lucy |
object | Yes | — | no unknown members | — |
reconstruction.sharpening.richardson_lucy.iterations |
integer | Yes | — | — | — |
reconstruction.sharpening.richardson_lucy.sigma |
number | Yes | — | — | — |
reconstruction.sharpening.deconvolution_supersample |
integer | Yes | — | — | — |
reconstruction.sharpening.resampling_kernel |
string | Yes | — | string length ≥ 1 | — |
| Field path | Type | Required | Variant | Structural constraints | Description |
|---|---|---|---|---|---|
color |
object | Yes | — | no unknown members | — |
color.illuminants |
object | Yes | — | no unknown members | — |
color.illuminants.photograph_temperature_k |
number | Yes | — | — | — |
color.illuminants.backlight_temperature_k |
number | Yes | — | — | — |
color.viewing |
object | Yes | — | no unknown members | — |
color.viewing.whitepoint_xy |
array | Yes | — | array length ≥ 2; array length ≤ 2 | — |
color.adjustments |
object | Yes | — | no unknown members | — |
color.adjustments.white_balance |
array | Yes | — | array length ≥ 3; array length ≤ 3 | — |
color.adjustments.presaturation |
number | Yes | — | — | — |
color.adjustments.dye_balance |
string | Yes | — | string length ≥ 1 | — |
color.adjustments.saturation |
number | Yes | — | — | — |
color.adjustments.brightness |
number | Yes | — | — | — |
color.adjustments.tone_curve |
object | Yes | — | no unknown members | — |
color.adjustments.tone_curve.type |
string | Yes | — | string length ≥ 1 | — |
color.adjustments.tone_curve.control_points |
array | Yes | — | — | — |
color.adjustments.tone_curve.control_points[] |
array | Yes | — | array length ≥ 2; array length ≤ 2 | — |
The machine-readable schema is authoritative for structural requirements, not a specification of all physical/semantic invariants. The typed reader additionally validates finite and consistent scalars, coordinate/mesh and image areas, MTF measurement/capture-group identities, exact required children, source-image paths and metadata, and aggregate resource limits. Do not treat a value accepted by a generic JSON Schema validator as proof that Color-Screen can load or use it.
Output ICC destination profile, export gamma/transfer, per-view gamut warning, window layout, cache budgets, scratch directory and transient measurements are not document-processing fields. They belong to the render request, view or application preferences.
For an example of real canonical documents, use the test generators and round-trip fixtures in src/libcolorscreen/unittests.C; do not use abbreviated table fragments as valid input files.
Color-Screen 2.0
Earlier releases