If you are running the latest beta of Google Chrome (available here), you are now able to install some themes from Google’s theme directory. To install a theme, you simply have to click the button “Apply Theme” from within the directory.
There are 29 themes available in Google’s directory, and they some of them are pretty good. I assume Google will allow third party developers or designers to create their own themes for Chrome eventually.
My favorite theme right now is probably the greyscale one, since it fits perfectly with my Windows XP ZUNE skin. (Yeah, how boring I am!) What’s your favourite?