@main: Yellow or white.

[razoredge]

Even though I don't favor any color over the other since I barely care about @main , but:

1- GMs' announcements appear on the top of your screen first.
2- GMs can use @kamib to make announcements appear in blue text, removing any confusion that may occur because of yellow @main. All Panda has to do is tell the GMs to use @kamib from now on.

@kamic <color> <text> also gives them the option of choosing what color they want aside from blue/yellow.

but I don't usually pay attention to main and I shut it off so whatever color they choose is fine with me =/