Does anyone else see numbers in different colours?

[Jacksmania]

I've always seen numbers in different colours. I mean that when I visualize a number, or a series of numbers like a telephone number, the numbers are in different colours. Sometimes the colours are different, but some are constant, for example, I usually see the number 4 in shades of yellow. The number 1 is usually white, but not always. Other numbers change colours randomly. I hope this doesn't sound like I've had too much wine.

Does this happen to anyone else?

I'm asking because DS now apparently says the same thing. He hasn't said it to me, but his kindergarten teacher mentioned it this morning in a "ha ha, how cute" kind of way.
I didn't feel confident enough to say "oh yes, I always have, too" (she's very nice but intimidates me a bit).

?
Anyone?

I've always seen days of the week as specific colours, Wednesday is a very dense purple, almost like it's been coloured in with a wax crayon. I had this much stronger as a child, every letter had a colour. I envy the people who see music as colours, must be quite magical