Two of the things that can cause discoloration of the palm of the hands and fingers are RSD and Raynolds Phenomen. Not sure I spelled that right. The RSD can cause pink and white blotchy hands and fingers and I do believe others have talked about purple and blue. The cold also comes with the CRPS or RSD. My right hand gets those colors and stays cold at times. My feet also do it. The nurse put socks on my feet in the hospital because she said my feet were like ice.

You might want to go to Dr. Hooshmand's sight and read up on the discoloration of RSD.

Ada