According to Dr. Bernstein (the diabetic doctor), about 1/2 of his diabetic patients have Raynaud's. It's supposedly that common. It's not so much of an issue if it's primary. If it's secondary, that is, if you also have autoimmune issues, then you should watch it. It could anticipate the onset of scleroderma.

I also seem to have Raynaud's. Never been diagnosed. But my fingers are cold and will remain cold for a while after handling cold items. Only my fingers, though, not so much my toes. No color changes, yet.