What socks do you wear

The type of socks you wear say a lot about the sort of person you are (in my humble opinion). Do you wear thin socks or thick socks? Do you wear bright socks or muted socks? Do you wear white sports socks with your black shoes?
Once, we were discussing whether it is right to wear odd socks. Myself and a girl I used to work with were adamant that it was wrong to mix socks of different types. Perhaps at a push, if I lost one of a pair, I might match up socks that were basically the same. Another girl we were talking to said she didn't match socks up at all and simply pulled two out of the drawer - this disturbed me greatly - but I don't have OCD or anything (or do I?)
Anyway, my latest discovery is 5 pairs of thin black socks from Tescos which have the day of the week embroidered on them to make them easy to match up. This way, I spend an extra minute looking for the correct socks for the day! Would I ever choose the socks from the wrong day and wear them? No way!! Or - perish the thought - mix up the days on a pair and wear them? I shudder to think of it.