A couple of the blogs I read have gone grey today in a show of support for the Grey Album.
But because I read these blogs in an RSS reader, the only way I know this is because they said so. Their posts are rendered in the same uniform black-on-white-with-no-graphics that everything else is. RSS readers are convenient, but they sure are visually dull.
The Grey Album is really great. Matt has it for download.
Update: OK, so several folks have noticed my trick of colouring this RSS entry. It's not a complete solution: for instance, this text should be green but it's not in RSS. More in a week or two after some experimentation.