So I've been thinking about this some more tonight, especially as a friend of mine told me she's read my last post and that she has coloured numbers.
I was discussing the number form/coloured numbers thing with Michael when I came home (he has a day form too, and an alphabet form) and realised that there are some numbers and letters which have an associated colour in my head. I didn't know I did this.
It isn't at all strong, and I don't "see" the colours in the way that I "see" the positions of days - I just have a "feeling" that certain colours go with certain numbers and letters. I don't feel uncomfortable if those letters/numbers are printed in the wrong colour, but if I was to choose colours for them to be printed in, I'd tend to pick the same ones every time. I can easily ignore it since it isn't that strong.
A is red. C is yellow, D is green. F is purple. G is brown. H is green. M is dark blue. Lower case n is green, but upper case N doesn't have a colour. S is white.
1 is white. 2 and 3 don't have colours. 4 is dark red, 5 is a mid blue. 6 is pinkish purple, 7 is green, 8 is blue (but a lighter blue than 5), 9 is pink. Bigger numbers don't have colours either, but the digits that make them usually do. (The colours I've used here aren't the exact shades by the way, just the closest ones I could find on the text palette).
Some musical notes have colour as well. It's not the actual pitch that gives it colour (they don't change colour if someone plays the music in a different key or whatever), just the position on the staff. Some correspond to the colours of their letter, like the yellow C. But some are different, like the D under the staff (brown).
Interestingly the E on the bottom line is blue, but the E on the top space is white. A is red like the letter, but the As above and below the staff (not shown) aren't coloured. The F way below the staff (the lowest note an alto can reasonably be asked to sing) is dark green, the F in the bottom space much lighter mint green and the top line F isn't coloured. The higher D (second line from the top) is dark purple.
Weird, isn't it?