The discolouration was most noticeable at the knuckles and joints. It looked subcutaneous. Had I done something to cause bruising? I didn't think so. There was no pain, the fingers still wiggled excellently. Unpleasant words started running through my head- cyanosis, doctors, hospital...
"Oh well," I thought. "Nothing I can do about it now. I'll go back to bed."
My hands were still blue in the morning. I was getting used to it. "Perhaps they've always been blue," I thought, "And I've just never noticed before."
And then I remembered how yesterday I'd been breaking in a new pair of fingerless gloves. At one point I'd got them wet- and clearly what had happened was that the dye had run.