*cough* Comments are a lot more helpful if they say more than essentially "it's bad"...
Anyways...the problem with the colors is that they're too bright when compared to colors used now for the eeveelutions. Like smarty_arty said, use the colors from advanced sprites.
When it comes to shading and highlights, don't be afraid to make up your own...seeing as the G/S/C sprites didn't have nearly as much of those as the newer sprites do.