Well, my right foot has been having problems with numbness - most of the toes are numb all the way, and there's a couple of patches that are half-numb. (If you know what I mean, and I think you do!) There's also a numb patch on the bottom.
I got out of the shower today and my right foot was white. Not the toes - the toes were normal-colored, and the ankle was too. Just the top of the foot was white. It went away as I walked around the house, hunting down clean clothes.
I'm wondering if this is Reynaud's or CRPS (complex regional pain disorder) which also I believe is called reflex sympathetic dystonia.
I've had the last two fingers on my right hand go white and numb as well, but it's been a couple of years.