Several very colorful planets. I once made these for the game naev. If you need more of them it is realy easy to make new ones with gimp and this script (or from here).
Comments
Thanks for uploading these! Should you have them in single files, you should totally zip them and attach them as well! :)
Thanks for this submission, these planets are really great!
I used them in my new Android game Tolum, and gave you appropriate credits :)