Google introduced themes for Gmail, you get bored quickly with one and can't stop switching them. The problem is, while there were previously only 30-some themes, the new "Choose your own colors" feature gives you endless possibilities.
Yes, you are now free to make your Gmail as ugly as you want -- and let's be honest, with this many options to choose, there's nowhere to go but ugly. Don't believe me? Check out the beautiful design I made above -- I call it "Melons and eggplant."
To find this option just go to the "Settings" area of Gmail and click on "Themes." The new option is after the last theme at the bottom.
[via Google Blogoscoped]