I took an online battery.
I am an honest-to-goodness synesthete. It's official. A lot of you snickered, thought I was just making it all up, but this battery gave me a score of 0.67. Below 1.00 is a synesthete, 2.00 is a normal person. Zero is a perfect score.
What this means is I associate letters and numbers with colors. Look at the picture. The battery asked me to identify the color of each letter and numeral three times (in random order). These are the colors I associated after three trials.
You'll notice that the middle zero is green. Green!? That's laughable! No zero was ever green. I clicked too fast when that one came up, so it skewed my score a bit.
You might think that this means that every time I read a blog I'm inundated by a psychedelic color fantasy, but it's really not the case. I associate these letters with colors, but I still see these letters in black, they just give me the 'feeling' of color. And basically the first letter determines the color of the whole word.
My most colorful letters are ABCDEFG. I see this as kind of an alphabet rainbow. I suspect it might stem from my childhood, playing with a xylophone, where notes (letters A-G) were associated with the colors of the rainbow, although that doesn't explain why they aren't in true rainbow order.