Just a quick rumination. I was diagnosed with raynaud's about 5 weeks ago, at the same time that my legs started tunring purple, joints clicking and aching etc. But am being tested for APS.
Anyway, I have not been 100% convinced by the raynaud's diagnosis, and so put my hand on ice for a couple of minutes. And there was no change in colour. They stayed the same reddy colour that they have been since all this started.
As I understand it, which isnt very well, your fingers should chnage colour in response to the cold with raynaud's? Seems more like some general circulation problem, perhaps arising from APS.