I painted my oak doors white using the behr Primer/paint white combo. Now three out of the four doors including some pine trim work is turning yellow. I may have also mixed paints after running out of behr I switched to glidden Primer/paint combo. I can't remember which doors are strictly behr and which ones got both coats. Could this be a painting mismatch issue or are the new oak doors out gassing? The doors are not pure Oak them seem to be the particle board innards with the oak veneer.