I just found this site:
welovecolors.
They have 45 colors (!!!) in pretty much everything they make. And everything they make includes:
solid tights and socks - men, women, women's plus size, and kids
stripe tights (black-and-x AND white-and-x versions) - women, women's plus size, and kids
vertical stripe thigh highs (black-and-x only) - women
silk ties - men, but don't let that stop you, ladies - for $18!!
wrist length gloves - men, women, and kids - not as nicely fitted as we might wish, but hey, they EXIST.
opera length gloves - men and women
elbow length gloves - men
stripe and fishnet armwarmers - women
shoelaces - hiding under women for some reason
And they ship internationally, too.
I can't vouch for their quality, as I haven't ordered from them at all, but they've apparently shown up in a bunch of fashion magazines, and actually bother mentioning both swim-fastness (!) and light-fastness, so they have to be at least as good as the Leg Avenue stuff. Having this available is super-sweet for pirates, dandies (Oscar Wilde was known for wearing colored gloves), knee-breeches outfits, lolita-steampunk or goth-steampunk outfits, ladies-of-the-evening/courtesans/liberti
nes (think Moulin Rouge)...