I've just never really got (read 'understood') the white gold thing when it comes to watches. Rings, I mean yeah, everyone knows you're wearing white gold, but with watches, seeing as the color hue for Stainless steel sits right between platinum and white gold, from a distance or even unless you're 'in the know', I feel that a lot of people would just assume you're wearing Stainless Steel.
If you're going for gold, I say go for yellow or red/rose gold.