I haven't painted a room white-ish in years. I think it was in 2000, when we were getting our house in Columbus ready to sell. My brother and I painted all night, painting several rooms white.
Since we bought this house we've used a lot of color.
But since all of the main floor rooms open from the hall, I decided that it should be white-ish. So I put paint swatches up for several weeks and compared them at different times of day. It needed to be a clear enough white that it didn't look dirty against the blue and white in the butler's pantry, but warm enough that it didn't look stark.
Next up: the main bath is about to be remodeled. And it's going to be mostly white. But I have a plan to get my color in there.