Harris from Sizzled Core has written a nice tip on how to install or change a Google Talk skin. He has also provided with the path where you need to install the theme for it to appear in Google Talk. So this tip is when you have a Google Talk theme with you, how about creating a new one? So follow these simple steps to create your own Google talk theme.
Steps to create a Theme
1. Navigate to this folder;
C:\Documents and Settings\<PROFILE NAME>\Local Settings\
Application Data\Google\Google Talk\themes\system\chat
Here you can see all the pre-installed Chat themes.
2. Select a particular theme and click on the theme folder and navigate to this folder;
C:\Documents and Settings\<PROFILE NAME>\Local Settings\
Application Data\Google\Google Talk\themes\system\chat\<Theme Name>\Contents\Resources
Here you can see main.css file. This is the file which defines the looks of Google Talk skins. You can edit these CSS and create your own custom theme. You can add your own custom images and colors to Google Talk.
3. Now open your Google Talk and select Settings-> Appearance and you will be able to see your new theme.
You can save these theme under different name and can also make it available for public download.

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