Although officially Google does not support yet various themes the look of your Google Chrome can be changed, you just have to replace the default.dll file responsible for the theme. The paths to the file is:

Path for Windows XP:
C:\Documents and Settings\[your user name]\Local Settings\Application Data\Google\Chrome\[current version]\Themes\default.dll

Path for Windows Vista:
C:\Users\[your user name]\AppData\Local\Google\Chrome\Application\ [current version]\Themes\default.dll

Chromium Theme Creator

There is a special tool called Chromium Theme Creator with which new themes can be easily created. Most of the themes available right now were created with this tool and although it might take a bit of time to design a new theme the process itself is very basic. The .dll file contains the png image files of which the theme is actually made and by modifying these images in any image editor you modify the theme itself. So, there’s no coding involved and all in need to know is how to modify graphic images. You might need some patience though ’cause it is time-consuming process.

List of tools you’ll need:

• Chromium Theme Creator: Download
• GoRC.exe by Jeremy Gordon: Find it and download it from here.
• ResHacker.exe by Angus Johnson: Find and download it from here.

How to use Chromium Theme Creator:

1. Unzip the downloaded files into a separate directory, you’ll get a set of folders with png files
2. Unzip and copy GoRC.exe and ResHacker.exe files into the same directory
3. Be creative and modify with your favorite graphic editor the png images inside the folders of your project which are in facts bits of Google Chrome standard theme.
4. Run Themer.exe file to start the Chromium Theme Creator application
5. Make sure you’ve got the correct specified path to your original Google Chrome default.dll theme file
6. Click on “Build” to build a new default.dll file that will be created inside your working directory
7. Make sure you’re not running Google Chrome browser and click “Test” and to launch Chrome and see the changes you made.
8. Alternatively you can press “Build+Test” to save time.
9. Save your project when it’s ready by exporting the default.dll file you created. You might want to save your project files before you start working on a new theme.

UPDATE: Chromium Theme Creator v2 beta

Chromium Theme Creator v2 beta is now available. Updates include:

• Self extracting Installer
• Various projects simple management
• Authorship details inside the same theme file (.cth extension)
• Preview themes: ability show images from the theme file itself by dragging theme files and dropping over it in order to preview and if needed default.dll can be replaced by sepcifying Chrome’s path and it can be launched by clicking “Apply” button.