It appears you can set custom attribute displays for point, vertex and primitive but not detail. Am I missing something?

I'd really like a way to simply place a label of the group name over top of a piece of grouped geometry. The closest I can get is using the group name on primitives, but that can be really messy on a dense mesh. I know that meshes can be in multiple groups, but for my specific cases that will not happen.

Thanks in advance!