ShadowColor is an interactive assistant for freehand drawing and coloration of human faces. I created the application as my final project in Professor Efros' excellent Computation Photography class. It is an extension of ShadowDraw by Lee et al. The idea is to provide a data-driven method for coloring images, including realistic gradients. The resulting application allows users to composite semi-realistic faces based on sketched attributes, for example, long hair, big ears, and a mustache.