You can use the followiing colors, you have to put the colors in "<>" for example: <gray>
Supported colors: <black>, <darkblue>, <darkgreen>, <darkaqua>, <darkred>, <darkpurple>, <gold>, <gray>, <darkgray>, <blue>, <green>, <aqua>, <red>, <lightpurple>, <yellow>, <white>
U can use it like this: <white>Hi this is a <gray>test.