Just buy a cheap thing of tooth whitening strips...
20 bucks, it's worth it...
I use one strip once in a while, and it helps out... I mean, why do people want bone white teeth? Just have it the same shade of the whites of your eyes.
My teeth look great because I will bleach them for a few minutes every month. (maybe an hour or less.)
They're white, but not so white that they seem to have a blue sheen...
plus, the toothpastes are great... they remove all the surface stains and help things out...