actually its not a chromatic filter and there was no post processing used. I used 3 lights (red, green, blue) pointed them at 3d objects, put a canvas behind it and the camera between the 3d objects and the canvas. The entire game is a shadow play of 3 lights pointed at 3d objects filmed on a canvas. So i put alot more effort into implementation of the theme than you thought. Since light is the way i thought making a trippy shadowplay with the 3 main colors for white would be a nice idea.