@Ello: Awesome shader, I absolutely love it. I don't mean to come off greedy, I'm just shader "challenged" when it comes to writing them, otherwise I'd do it myself. But is there any way you can add diffuse/alpha channel support to it? So that instead of changing the values by pressing a key it reads the alpha channel and creates the intensity based on that? Or even if that's not possible just using the alpha channel to mask what's affected by the chrome?

I'd even be willing to pay someone for a shader like that for the effort put into it. PM me for details if need be.

Excellent contribution Ello, your shader and post process fx continue to amaze me. Thanks!