Ah, thanks for taking the time to redline - I was already planning to redo the fingers, but the thumb's been giving me some trouble. I kind of hit on the grey shading by accident (I didn't like my first colour scheme, so I started desaturating everything) and I'd left it at that as I wanted the colours to be quite neutral, but seeing the purple colour in the shadows gives it a real neon lighting look. That intrigues me enough to want to do something with it...