Tobacco is my favorite, with a Mint Green pickguard and pickups. Here's a pic of my '07 Am Dlx Ash Strat in Tobacco Sunburst.
The pic makes it look more washed out than it is, but at least it gives you an idea. I like sunbursts where the finish is translucent all the way to the edges, and the back is also translucent, so you can see the grain everywhere on the body.
As far as solid colors go, I like Snow White Metallic, Pearl White Metallic, Candy Apple Red, and that Candy Tangerine Fender and Charvel offer.
Do you know what kind of fretboard you want? Personally, I'd go for a Quartersawn Maple neck with a Flame Maple or Ebony fretboard and Abalone inlays. (The neck you see on my pictured Strat is a Musikraft in that configuration).