Screen printing can be done on both light-colored and dark-colored materials, although there are some considerations to keep in mind depending on the color of the material. For example, printing on a dark-colored material may require the use of a "flash cure" between passes to help set the ink, or an "underbase" of white ink to help the colors stand out. Printing on a light-colored material, on the other hand, generally requires less setup and can be more straightforward.