Social networking: Allow users to personalize their theme
I want to develop a module where a registered user can design their own theme (using a color.module theme) and upload their logo. Then, this theme and logo will be saved to the filesystem and will show on any of that user's full node page views (my usernode, my blogs, etc. all have my custom theme/logo). It's like MySpace except you have a controlled set of colors/logo, instead of slopping CSS into some About Me section.