Here.
For triggers, use the "hex" codes in that link. Remember that you need to begin the code with a | and to end the color code use |r.
There are also just the basic player codes you can find, use the search button. It will do wonders for you.
|cFF00FF"TEXTHERE"|r
Do this:
|cFFCC11Wave 2 in 8 Seconds|r
Example:
In Editor: |cffffcc00Hello world!|r
In Game: [COLOR="Orange"]Hello world![/COLOR]