Themes Screenshot from GmailBlog

Gmail engineers just released themes for Gmail. To access these themes:

1. Log in to your Gmail account.
2. If there isn’t already a notice box in your inbox, click on “Settings”, which is located at top right of your screen.
3. Last tab is “Themes” tab, click on them to  change them.

Themes are only avaliable for Newer version of Gmail. If you can’t see Gmail Themes tab, that means that you are using the old version of gmail, which can be changed by clicking on “Newer Version” right next to settings link.

Right now, there are 31 themes available to choose from.  They are pretty nice actually. Some of them really worth a try.  Also, gmail now has a different default skin as well.