[BlackWolf120]

pawn Код:

ShowPlayerDialog(playerid,dialogid,1,"{CD3333}Register","{855E42}This account is not registered yet.\n{CD3333}Please register {855E42}by entering a password below!","Next","Cancel");

Just use hex colours is the "{ and }"

This could help: http://www.december.com/html/spec/colorhex.html