What color is Satan's wrist band?

So I hate colored wrist bands. I think this was an awful idea that in some part uses stigma to convince other people to adopt a "cause" and pay $2 to a questionably legitimate source that they know nothing about. Even if it raises money, I don't think the ends justify the means. Anyway, I'd like to rant on and on, but the real purpose of this is to quote a section of "Good rocking," and article in this week's The Economist:

(emphasis added)

The study also spots a problem with celebrity backing: too many of them are associated with other causes--if only by sporting the curent craze, a colored wristband. "For example, Sienna Miller, [an actress] shouldn't be seen in a blue band one day and a white band the next, as this will negatively impact [...] over the whole campaign.

Synovate notes that the public is already confused about which cause is attached to which band. That's understandable. Nelson Mandela handed out white bands for Make Poverity History in central London, but the same colour is also used by anti-abortion campaigners. Blue stands for anti-bullying, anti-Bush and research into prostate cancer. Nor is it clear that wristbands contribute much to fundraising. Some are sold on market stalls with no connections to the original causes. And, embarassingly for the anti-poverty campaigners, some may be made in the same "sweatshops" that they (mistakingly, free-traders would say) so deplore.