LT Jim i have got that, and i will share it but gotta go to uni, i haven't a tut as such but its a theroy, check out the toon shaders as they reacte to light and britghness, so i figure it could be used in advanced lghting for animation. i hear you about not getting involved with more toon shaders as toon shaders but even as those.., the toon shaders are good, if only for the way the two tone and three tone, ect reacte with light.

i'll get onto ASAP