I recently bought a house where the previous owner had installed new light oak PVC windows and porch downstairs but the upstairs windows are white. It looks odd to say the least! I really don't like the fake wood windows and want them all white. Is there any method/realistic way to do it [make them white] without replacing them? Don't think I can afford to replace them and even if I could it seems a shame to rip them out when they've only recently been fitted (within the last 4 or so years).