Toggling options should immediately update recplayer canvas

[GauChoob]

Seems pretty trivial:

setGrass: function(v) {
  optGrass = v;
  optIdent = {};
},
setPictures: function(v) {
  optPictures = v;
  optIdent = {};
},
setCustomBackgroundSky: function(v) {
  optCustomBackgroundSky = v;
  optIdent = {};
},