I've just revisited the colour correct shader and it gives much much better results over the C4D filter shader. Especially for brightening and darkening textures. Just one thing still missing is a quick HUE slider and I think that would replace the filter shader entirely. I know you can use the colour mix shader but that is a bit more cumbersome and tricky to get right I find compared to a nudge of a hue slider for creating variations of a shader - like a leaf.
