The color panel lets you modify the predefined color themes, and change the
colors that Snak uses for the different kinds of messages. Each panel is assigned
a color theme to use, and you can select another one from the channel
Click on the colored fields to bring up a color picker dialog.
The Color Themes set groups of colors to match some common color setups. The
terminal theme uses black windows with green text, and pastel uses light pastel
colors with black text.
In the Message preference panel you can turn on
the option to colorize the nicknames in the nick column. If you do that each
nickname will be assigned a color from the Nicknames block.