The MTT Lobby uses color codes for players to easily recognize their favorite promotional tournaments. Below are the references for each color:
Gold = where a player can win a ticket for a target tournament.
Blue = Freeroll tournaments in which the buy-in is free ( , , etc.)
Aqua = Daily Freeroll tournaments
Red = daily tournaments (American, European, Asian).
Pink/Purple = that feature a guaranteed prize pool.
Green = Tournaments.
Grey = Regular Tournaments which are not related to a specific .