COLORFULWINTER
We Love Colors sells tights, fishnets, leotards etc in pretty much every colour you can think of, in nearly any size you can think of. They have outstanding reviews and are known as the best company producing coloured tights right now, esp for their durability and comfort.
Colour Chart
Product Durability/Features Comparisons
This is only the second time I've seen them offer free international shipping over many many years, and since their min shipping at this price is about AUD$30 it's a pretty great time to order.