That's what I reckon the kit should be like.
Traditional colours of the Broncos, as well as a continuation of the style from the Quins. Gives them a uniqueness in RL. No other teams play in quarters, so that could be their style (just not the same colours as Quins!).
Hull and Wigan are hoops.
Hull KR and Leeds have a single band.
Saints Catalans have the chevron.
The rest just make it up as they go along!
Think the Broncos will help their identity in RL by keeping the quarters, and help their identity in London by changing the colours!