Colors can influence emotion, sway thinking, increase (or decrease) appetite, affect energy consumption, strain or soothe the eyes, alter blood pressure, and captivate or repulse consumers. Developers looking to add colors data or functions to applications are in the right place. To receive updates about Colors APIs, click the TRACK THIS CATEGORY button below. And, if you want updates from other ProgrammableWeb categories, be sure to click the track button on those category pages as well.