The Color module allows users with the Administer site configuration permission to quickly and easily change the color scheme of themes that have been built to be compatible with it.
In order for color module to work, a theme must be specifically designed to use the color changing features. The Drupal 6 default theme, Garland, and the Drupal 7 default theme, Bartik, are both compatible with the Color module.
The Color module allows you to easily change the color of links, backgrounds, text, and other theme elements
The Color module comes enabled in the Drupal 7 standard profile. You will have to enable the module if you are using Drupal 6 or the Drupal 7 minimal profile.
After enabling the Color module, navigate to your theme's configuration page (in Drupal 7, Administration > Appearance or
http://example.com/admin/appearance) and click "Settings" for your theme. This will display the color picker tool which will allow you to modify the theme's color settings.