What is the best color choice for a stairway and lecture hall central to other boldly colored rooms? Additional bedrooms are green, blue, yellow and an oatmeal color.

Additional bedrooms are green, blue, yellow and an oatmeal color.
Painting counsel please!?
Answers:    I would dance with something independent like off-white or tan. There are SO tons different shades to choose from depending on what looks best with your other colors. I would not suggest you do another bold color because you would run the risk of it looking similar to a child's bedroom (primary colors).

I would take swatches of your other rooms and compare them at the store next to their selections. Ask a salesperson for their expert belief as well. Happy sculpture!
Big picture?
red, to stay with primary colors, or black, still bold & go with everything