Isn't yellow suppose to be a happy, bright and cheerful color? It isn't when you're trying to cover it up! The girls' room is good sized for our tiny house, coming in at 11 feet x 10 feet. I really didn't think I'd be needing more than a gallon of paint to finish the job but the yellow will not go away! After two coats of paint and primer in one, you can still see just the slightest bit of yellow. Hopefully after one more coat I can start freshening up the trim and getting the room put back together.