Conky is a free, light-weight system monitor for X, that displays any information on your desktop. You've seen it in many screenshots under various forms; take a look at these screenshots if you don't know what Conky is.
A while back we told you about a really easy way to configure Conky using a GUI called ConkyWizard
- which is very nice, but it doesn't come with plugins and too many options. Conky Colors on the other hand doesn't come with a GUI but is just as easy to set up
(from the command line) and it comes with A LOT of options and scripts (from Gmail to Rhythmbox, weather and more) so you can create an amazing looking Conky in a matter of seconds (don't let our long guide fool you - you just have to install a few packages and run Conky Colors).
You can view a list of options supported by Conky Colors, here