We have those old-fashioned internal doors with windows in them. Despite masking taping the windows before painting, some paint has managed to get on the windows, as the windows have a bumpy pattern on them and the masking tape didn't quite sit flat.... I'm just wondering if there's an easy way to get the paint off the window. So far I've been trying to scrape it off with the end of a flat head screwdrier, but it's taking ages. Does anyone have any other methods? It's water-based gloss paint if that's relevant.