I’ve written before about “real estate beige”, and Chris Butterworth has written about getting a crisp, clean line between two colors of paint.
This is a textbook example of real estate beige.

This is exactly the tonal difference you’re aiming for when repainting beige to sell your home. And believe me, nothing impresses buyers more than a neat coat of beige paint on the walls and crisp, shiny white trim. Don’t believe me? BigMedia printed the evidence of this recently…

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Painting the interior returns 250% on your investment. Holy Off-White Latex Liquid, Batman!
It’s the same reason car dealers detail every car they sell. We’re all suckers for clean & neat. Sellers, take note. Grab your paint brushes and bring home the bacon.