Add some painters tape to the hinges of your door instead of removing it when you paint. I don't know about you, but I have yet to get ANY sort of door to hang the way it did before I removed it to do the painting.......D.
Paint Interior Doors Tips and tricks: Changing the color of an interior door can take a room from drab to fab. But too much contrast between the door and the wall can be jarring, warns Filian. If your walls are bright, choose a similarly lively color for the door.