I have settled and opted to paint rather than stain me cabinets white. So what can I put over the white paint to give it a nice protective coat. I was thinking polyurethane but am pretty certain it will yellow over time. I once refinished a painted desk with a coat of clear spray paint and it worked perfect but I am afraid that if I spray paint inside my house I will be high for weeks. I have 2 kids so I really feel that some sort of clear coat is necessary, ideas?