I've read this before, but for some reason I never reviewed. I have mixed feelings about this piece. It starts off very promisingly, but as the chapters go on they become shorter and shorter, and less involved. Did you lose heart in writing this and just rush to finish it?
I like chapter three, the descriptions of the colours are brillient. I wish we could have met the sorcerer, he sounds so interesting. Perhaps you could do a spin off with him in it. Or were you making a point about the sorcerers omnipotence and mystery by never showing the characters meeting him? This method could work, but then it could also just leave the reader dissatisfied and confused at the sudden ending. What was the price they had to pay? What happend when they met the sorcerer?
I think this is a beautiful skeleton, but it needs a body of text to pad it out.