If you're browser supports custom CSS files (which pretty much every browser does), you can just use the following: a[rel~="nofollow"] { background

If you're browser supports custom CSS files (which pretty much every browser does), you can just use the following: a[rel~="nofollow"] { background-color: rgba(255,0,0,0.10); //background-color: rgb(255,0,0);//for people without rgba } Credit to Tom: http://tlrobinson.net/blog/?p=37 http://tlrobinson.net/blog/?p=37