Unless things have changed since 2013, there's never been a rule against Krush members wearing Chief things. Illini Pride board members, though, did have that rule when working as "Krush Helpers" since we were acting as sort of University/DIA representatives in that capacity.
I thought it was hilarious that in the news gazette, it was reported that the anti chief people actually made a request of BTN that they not broadcast the game due to paint the hall chief. BTN did'nt even air the game. It was FS1.
One thing that occurred with this event, the band played the 3-in-1 real quick at halftime (began while they were still reviewing Mark Smith's buzzer 3). The result was Orange Krush could not surround the court as had been promised, resulting in a very pissed off Krush.