It isn't that there are no workarounds. It's that it's changed a minor frequent task and made it more annoying. The only benefit of the new outlook, is that the old version can run very slowly in windows 11.Efficient, but not definitive.
The changing of the available colours (restricting to a set of muted colours rather than even 8 bit colour) is also a reduced functionality that is only mitigated by the fact that the other removed key functionality for conditional formatting means it's less important (highlighting emails from within the organisation, no longer works, for example).

