The colors you select for an interior wallpaper should be a good match to your window treatments, flooring and furniture. You can get the color saturation of a bold paint color by selecting a colored wallpaper with a pattern that's a few values lighter. This approach gives an elegant touch to a bathroom.
Choose colors from the color palette of rest of your décor. Repeat one or more of the colors with your wallpaper choice.
Use the accent color as the main color in your wallpaper to create drama and contrast.
For a smooth easy transition, repeat the wall paint color as the main wallpaper color.