Stripped down version of https://github.com/FNF-CNE-Devs/YoshiCrafterEngine/blob/main/source/NoteShader.hx
new()
@:value(0)b:Float = 0
@:value(0)g:Float = 0
@:value(255)r:Float = 255
@:value(new ColorSwapShader())read onlyshader:ColorSwapShader = new ColorSwapShader()