looks like i'm first to help you again
but where are those lazy NKs? Still sleeping?
those messages you can create in settings/input. All you have to do is adding a color code, just like in choosing colors for your ingame nickname
basic colors and their codes are:
^1 - red
^2 - green
^3 - yellow
^4 - dark blue
^5 - light blue
^6 - pink or violet?? You should ask some girl, they're better at color names
^7 - white
^8 - light grey
^9 - dark grey
^0 - black
for more colors you have to add a 4 symbols code, for example ^x064 is a nice dark green. Those codes you can check in player setup with this color pallet there, by clicking on a particular color on this rainbow pallet.
I have binded this message to a HOME key, and after pressing HOME: