Powdered murex seashell dye is available on the internet for not very much money. I may need to acquire some and dye something, just to add to my anachronistic skillset. If I do, I may also try to obtain indigo and/or woad and have an Ancient Blue Dye Party. If I had planned this sufficiently in advance, the weekend after election day, provided Obama wins, would have been a geekily appropriate time.
In which everything is available on the internet