This greyscales the palette of your Display Objects.
Syncs the uniforms between the class object and the shaders.
The strength of the gray. 1 will make the object black and white, 0 will make the object its normal color.
Array an array of filter objects
An array of passes - some filters contain a few steps this array simply stores the steps in a liniear fashion. For example the blur filter has two passes blurX and blurY.