When you see the number 5 do you see red? If you do, you are likely to have a condition called synaesthesia or the intermingling of the five senses. You aren’t unique, though. Apparently one in 2000 have this.
“This cross-wiring might develop, they believe, by a failure of the ‘pruning’ of nerve connections between the areas as the brain develops while still in the womb.”
I wonder if the colors and numbers experienced by these people are the same if they individually have their own unique combinations. If you are staring in to a computer screen day-in and day-out as I do, to color correct images, one can only hope that photographers and photo editors aren’t afflicted by this. It would be sheer hell to deal with seeing colors and numbers at the same time. Heck, growing up in India reciting the requisite multiplication tables gave me the shivers; I think I saw red, blue, yellow and finally black (when I passed out).