The legs were stubby and lacked definition so I played around with them, alas, I didn't manage very well.
Complete desaturated gray
never looks good, seriously. only looks good when the artist really knows what he/she is doing, so I changed it (it taking up so much space made the piece very artificial-looking)
The colours had no relation to each other, so I made the shadows blue, which would suggest that the ambient lighting in the area is the same.
Anyways, this is a very lazy edit, holler if need more help.
Edit: Oh, and my edits are never an attempt to show how the final result should be like, but to offer a first step to an improvement that I'd like to see. (:
So disregard the broken outlines and complete lack of polish.