In the past, buildings with both low-slope and steep-slope roof areas presented a real design challenge, mainly due to the limitations in low-slope roofing color choices. Most often, building and design professionals were forced to match bright, attractive shingles with modified bitumen membranes, traditionally available in black only. It was either this or choose a black shingle to achieve the monochromatic look on a mixed low- and steep-slope roof. Fortunately, things change. Color science has advanced.