I decided to jump head-first into Google Gadgetry with a Color Harmonizer.

It’s currently an “alpha” release, so… basically it’s a pet project I plan on finishing when I’m not bogged down at work. This also means the code isn’t exactly hardened, so I’m not too worried about someone copying the code!
It was really interesting “diving into” the Google Gadget Desktop API. I’m going to type a blog in the coming weeks regarding my impressions, but I haven’t really gotten deep enough to sound coherent.
In the meantime, you can try it out or check out the source if you like. Keep in mind the archive has a “.gg” extension, but it’s really just a renamed ZIP file. Just right-click and Save As…
Download my alpha Google Gadget