All you have to do for this task to become fast and easy is save your take-out containers and store each of your room colors for easy access and clean up! Who wants to deal with big paint jugs or 5 gallon drums? I suggest you store these containers inside if you have the space. The paint will keep better for you and last longer. Also, have a small paint brush for each color so that you don’t have to clean your brush in between each room.
After you’re done, soak your brushes over-night in a couple more take-out containers and rinse in the morning! You’ll never dread this task again!