feet are not cold, color is the same. numbness doesnt go away with walking or exercising.
i normally wear sandals, and have been either barefoot or in sandals or sneakers since it started. like 5 days prior to when it began, i was in tux shoes that might have been too tight in a wedding, but i didnt notice till 5 days following, and it hasnt gone away going on 3 weeks now.
You say you have had this for a while.
You may need to go to a Neuro or see even if your doctor can organise a MRI. sounds to me something regards to yr nerves in your feet. What ever you decide.. Dont ignore it. Its NOT normal to have it go on this long.