Colored Tags Tag Cloud Widget gives you a widget with colored tags
Highlights the background of draft, pending, future, private and published posts in the wordpress admin
Use this plugin to attach a color to each of your categories, Great for creating a distinguishing look for each category on your site.
Gradient Tags Tag Cloud Widget gives you a widget with tags where the colors slowly become stronger with the bigger tags
Color Widgets for WordPress is a widget to show any custom text or html in a colorful and styled way.
RSS link for this tag.