For many years now, we've had a silent running battle in the house. Kathi thinks the walls are too white; she finds them institutional, hospital-like. I say they have an “art museum” aesthetic—which is just a sophisticated way of saying, “Yes, they're white, perhaps even too white, but provided we have an easy justification we don't have to do anything about it”.
Well, we've been attacking the walls for some time now, and gradually reducing the whiteness. We've mostly just removed one white wall per room, but even that has made a dramatic difference (indeed the most, as any incremental changes would have diminished marginal value).