Around the world, people are displaying green to show support for free and fair elections in Iran. Twitter is a sea of green avatars. Even the BBC has gone green, so I figured I would too.
PS - a couple of days later I realized that text I had manually coloured yellow in some of my posts wasn't showing up with the green template selected (ah, so that's why I should let the template do all the work!)... so I have gone back to my previous template... and, heck, it was green anyways ;-)