(http://i.imgur.com/PC0oeSO.png)
Bigger version:
(http://i.imgur.com/uSZjwJc.png)
Old version:
(http://i913.photobucket.com/albums/ac331/Superjustinbros/MM8bdmnewfontcolors_zps50c28fef.png)Bottom two rows are exclusive to Lobstacle Course
This is a chart I assembled containing a variety of custom text colors. Included are the 22 basic colors, everything from Fuzzball's Text Color PK3 (http://zandronum.com/forum/showthread.php?tid=3502) over on the Zandronum forums.
To type in color text, add \cX, with X being any lowercase letter between A through V.
All colors on the second row and lower require you to close the letter/number code within brackets [] after typing c. So \c[c1] would give you color C1, \c[i4] would give color I4, and so on. If the color code you enter is invalid (or you don't have the necessary pk3(s) installed and loaded), the text will be in cl's color. You must not capitalize any letter in the color code, or else it will not work.
Spaces are not required to be put in-between the color codes as they are not visible to other players once the message is sent (only signaling where the text becomes colored beyond where the code is typed), so typing \chMegaman will display Megaman, and typing \cgProto\cuMan gives ProtoMan.
If making a bind, you must type "\" twice before specifying a color's ID to choose a color. So for instance you'd have to type the above example as \\cgProto\\cuMan to have it display correctly.
To always have Fuzzball's custom colors present on all servers including those that don't have the pk3 loaded, simply put the text color pk3 into your Skins folder.