This is awesome, I love to see new effects popping up. My game relies a lot on composition and colors, so this really helps keeping the graphics the same, but changing the mood of a layout.
So, since you're porting Photoshop effects - is the math for AutoColor / AutoContrast / AutoLevels available as well? It'd be awesome if we'd have all the photoshop effects in Construct. We're pretty much already 85% there, but some of the cool ones are still missing.