Colour and alignment in StarCraft are control codes inside the string. They are hard to read, and checking them usually means compiling the map and launching the game - minutes per colour.
A text previewer does that for you: paste the codes in and it shows what the game will show, so you settle the line there and then move it across.
Remember the Out-game tab. A mission briefing uses a different set of colour codes from in-game text, so writing briefing text against the in-game table gets every colour wrong.
The full colour and alignment table