Help!! I am currently in the process of building my home and I have to choose the paint colors (through Sherwin Williams) in a week!! The ceiling will be North White and the trim will be Pure White semigloss. I really want some grays in master room and kid's room, but am UTTERLY lost when it comes to the entire house!! I have living/dining combo room as well as an open great room and kitchen. The only stipulation that I have is that I can only choose colors that can be painted once over primer. I also would appreciate any insight on how to decorate the family room. The fireplace is now in between the windows