There is a way, they could've just let us use their monotone logo. Company logos always have multiple versions, at the very least there will be both colour and monotone. I'm a graphic designer so I make the damn things, it's standard practice. The reason for this is simple: it's cheap to produce a monotone logo for apparel like embroidered employee shirts. A full colour logo in that situation would be wasteful.
It would not have been impossible for them to put a monotone logo on United's shirts, in fact most brands do that. It's not unreasonable or stupid for fans to wish they had just followed standard practice. Instead they clearly wanted the full colour - probably to make it stand out - and they've paid enough to get that.
Chevrolet even have a monotone logo in use elsewhere, so it wouldn't have even been outside their standard brand practice: