I like earthy tones on a website. A good basic caresheet, and links to other breeders(perhaps that you trade with), Local upcoming shows you plan to attend.. Things like that.
Oh as far as colors go. I do not know what is the best color for a website. But for Advertisments in the newspaper(I work for a paper), Yellow. There was a research done a few years back that proved that people eyes would go towards yellow ads before any other colored ad. Just a fact I thought I'd share.
So maybe if your running a deal, make it bold in Yellow....