I am a fan of how with X05, tags with subvalues notate this more explicitly. In XO6, they just show the = sign separator, which I think decreases legibility.
So this is simply a request to make XO6 tags display more how XO5 tags do, including color selection.
XO5:
XO6:
I'm not saying match the interface exactly because it is kind of ugly, but keep what's good.