To change the theme for Google Chrome you will need to replace the default.dll file with the new theme file. Location for theme folder are as follows Replace C with your Windows directory, UserName with the user name you have installed chromed with, the number is the version for Google Chrome.

Because of its fast and minimalist browsing experience number of Chrome users are increasing every day. However, for some users its default blue color theme is disappointed.
This big problem is solved by new app Google Chrome Automatic Theme Switcher. This little application changes the skin of your Google Chrome browser. The application bundles up [...]

Though Google Chrome is a baby compare to all other Giants. However, its popularity growing day by day. Here i am mentioning 10 Popular Google Chrome Themes. With Themes surfing on internet will be surely more fun.
You would like to read my post How to install themes in Google Chrome if you don’t know how [...]