Want to inject some color to your photographs in a hurry? Well, new software can take an alarmingly good guess at what a color version of your black-and-white photographs may look like. Researchers from the University of California at Berkeley have developed a new computer vision system that takes a grayscale image and then adds color to it in a way that looks convincing to humans. That careful description is important: It doesn't necessarily choose the right colors, merely ones that look plausible. It uses what's known as a convolutional neural network to perform its party trick, having been trained on a set of over a million color images.