This rose has been here for at least 10 years, and probably more like 20 or more. I didn't plant it, so I'd love some help with id.

Pretty sure it's a grandiflora, as the bouquet is from just two branches. But it's only about 5 feet tall, so not a giant. Maybe a larger floribunda?

They start out apricot and age to a tan like color. The color does change with temperature, spring and fall is more apricot, summer more tan.

Bush is upright, dark green shiny foliage and very disease resistant. Repeat blooming into fall. No scent.

Any ideas would be great! Thanks!