Painting your walls is a cheap and easy way to make your home more appealing to potential buyers or for your own eyes! Realtors usually suggest a neutral yellow, but I like a gray or tan color as my neutral go-to. You can tell from the pictures below that these rooms aren't lacking in personality or color. You can bring so much personality & color in through curtains, pillows and rugs.
Adding a bold color can be done, but make sure it isn't too personalized. If you stick in the gray, brown or navy family it is more likely that you won't have to paint when you decide to sell your house.