And the support is GREAT! You can find a lot of information in the forum and if you don't find what you need, you submit a new topic and Markus is answering faster as you can imagine!
Thanks a lot for this component!
I was searching for such a module for my new project. Each page should have another background and doing it per CSS definition in the template was very complicated.
HD-Background Selector is easy to use and very helpful.
The only problem I found: there is no "Colour" field in the configuration in the version for Joomla 1.7. I'm missing something?