Kidding aside, I had undiagnosed synesthesia pretty bad when I was a kid, but I learnt to ignore it as I grew. Now I am aware of "solidness" associated with "Wednesday", or "blue" with 8, or "sharpness" with "yellow", but these are not intrusive or confusing. For me, they aren't a 1 to 1 mapping. 3 is yellow but it's also orange and so is 7. Dunno.
I do experience multiple colors for certain things, but they are either in the form of a texture/gradient or dependent upon context. For instance, a "C" in a chemical formula is different from in a word.
And orange here is more like butterscotch the flavor than it is the color. Gah, no wonder I trained myself out of it.
I envy those who have a 1-to-1 mapping of sensation to concept. For me it is just a big ol' inchoate mélange.
Do you enjoy it?
I also see sound, and it constitutes roughly half of the stimulus I receive from music. Though it can be a bit annoying in noisy places when it can get distracting.