"only XL-3"

I also received messages about this on ICQ. Please formulate the rule as it should sound.
I see a clear distribution of colors within the groups, but in the playoffs, bargaining for a color is acceptable, and who usually initiates it?

I think it's not very fair when someone gets a color advantage for free. When there was a black color, it was balanced by choosing a stronger castle, but here, a stronger castle is neutralized by a rollback, and the color is obtained for free. And who starts the bargaining for the color, in my opinion, is not important; whoever wants it first.