Interface Overview - Mastering phpMyAdmin 3.1 for Effective MySQL Management - page 43

To help choose a suitable theme, the color palette icon next to Theme / Style brings
us screenshots of the available themes. We can then click on take it under the theme
we want. The chosen theme is remembered in a cookie. By default, the remembered
theme applies to all servers we connect to. To make phpMyAdmin remember one
theme per MySQL server, we set $cfg[ThemePerServer] to TRUE .
The color picker
Here is a feature—the custom color picker— that may seem frivolous but has its
utility. We'll discuss first the how and then the why .
Located on the homepage, the small rainbow icon gives access to a picker, which
controls the background color of both panels. The phpMyAdmin team merged the
MooRainbow code from Djamil Legato ( http://moorainbow.woolly-sheep.net )
to offer this feature.
You can operate the picker in many ways—moving the slider, moving the mouse in
the big square, or directly entering values in the fields. When you are done, you click
Select to clear the picker.