You'll need to use the control-character “\f” (line-feed),
If you need to use it interactively (in-game), you'll want to know it has the ASCII-code of 12;
Colorization (this also applies for CubeScript/ingame colours) works via the control-char followed by a indication character. Apart from the special cases of “\fs” and “\fr” for saving/restoring previously set colors in the current line of text you can use the following numbers to set to the respective color:
Everything else is drawn in white.