Err.. I'm not sure I get what you mean entirely there. It's what I visualize when I think of the numbers and letters, or listen to the music, if that answers your question. I don't know what you mean by seeing them with my eyes..

They're not always the same colours, especially not letters. A few numbers are more fixed, for example 14 is almost always dark blue, 13 is usually dark green and 18 is usually yellowy orange. There are textures as well, which are a bit more difficult to describe and are often connected to the way they are written - round numbers like 0 and 2 are horribly smooth and boring while 5 and 9 are more jagged and edgy. I dunno about the most colourful music.. maybe classical orchestra pieces, because they have so many instruments and they're very.. descriptive in a way, since the music is supposed to tell a story. :P

Hehe fair enough. I like mixing things together to make new flavours, eating one group at a time is too boring for me.

Oh noes! Well, sometimes you can get lucky with guesswork, let's hope that was the case this time. *hugs*

I dunno, synaesthesia is not actually that uncommon, but I also think a lot of people do it to some extent anyway. It's just how we visualize things like letters in our head, I think most people will associate it with colours to some extent.. that is however done more to make sense of the letters or distinguish them I think, while synaesthesia is actually a neurological condition. I'm not saying you don't have it, mind, just that I think most people do it up to a point anyway. Apparently as many as 1 in every 23 has it though.
It's pretty great anyway, I'm trying to train my mind to use it to help me paint.. I've not used colours in my art for such a long time and now I want to see if I can use this perception to better realise what colours go together etc. I've always been very picky with colours in my photography too.
If you want to read more about it, here is the wiki page, it's pretty thorough. I also have the thing where I see time in a very specific way, a sort of snake, which helps me in remember what year something happened, as I can remember which "side" it happened on.. it's difficult to explain with words, maybe I'll draw it someday. :P

Hehe awesome, it's fun to hear how other people visualize it. The years for me are sort of like a snake going a kind of zig-zag, taking a sharp bend around new years. I can see it going on and on, but usually I see it as one year being on one side of the turn and the other on the other side, so I'm always looking at two years at a time. It's the same kind of process for the weeks, except smaller, though the months are just a straight line inside the year. For example, this year is on the lower / right side, and this week is on the upper / left side. I dunno if it makes any sense when I say it like this though..