Problem changing colors in the mayo theme I have installed the mayo theme on my new site. When I try to go to "appearance" menu, and change the color combination from mayo (default) to anything else, the system saves the settings. but the website is not using the colors I chose.

What could be the cause?

I'm trying to change colors, but nothing I do works; the colors are correct only with the default color combination.
Have you installed the theme in the right location (sites/all/themes)? If so, verify that each template has a CSS file for it. If so, then the next place to check is within the template's .info file to ensure that the CSS file is indeed being used.

Perhaps this thread would help assist you:  http://drupal.org/node/1118068