"Marble Factions" is a Youtube series (many, in fact) started by a youtuber named Minecraft Iron Axe where teams, designated by colors, fill in squares of a grid. I was participating in a remix chain on Scratch called "Elimination War" (see on my profile) which is basically this but powered by actual people instead of RNG.
I assure you that this series is entirely unbiased. I don't pick favourites and any randomized outcome in the series is the first output of a pick random block. Many of these colors may seem unfamiliar to you, but after about ten colors or so, you start to run out of familiar ones. And I'm using 25. If you want to pick a color you think will win the game, go ahead. Otherwise, no hate please.