Traditionally white lenses have been associated with Canon, but Nikon has made a few "light grey" models over the years. One of the most recent was the 70-200mm f/2.8 VR, pictured below with lens hood and mounted to my D90.
It was an interesting novelty, but short-lived for me as a screaming deal on the new 70-200mm VRII came along. No word if they will produce a white 70-200mm VRII but I'm sticking with black. Although I certainly couldn't fault the image quality on DX: