My entire house, walls and ceilings are painted SW Easy Green- way too much green for me. Many ceilings in my 3300 sq ft house are 20 ft. I can't afford to repaint everything, so my question is : What effect will painting the ceilings white have? Also should I use a creamy, brilliant or grey white? I hope to lower the intensity and value of the green- would love to grey it up too. Help!