So, if I'm not wrong from looking at the posts, seems like most people prefer the normal colours for Snivy. I do agree with that - it's much more natural that way :P The shade of blue for the Shiny Snivy doesn't look great, and it does look a bit irritating to my eyes. The colour doesn't complement the other colour...
True, the normal colors do supply a more natural and fitting look, but it's nice to mix it up a bit sometimes.