RainbowBrush enables you to easily and quickly give pictures a dramatic look by converting these to black and white, while keeping your selected details colored. This effect draws the viewer’s focus on the coloured places, creating striking images. With its intuitive and responsive interface, RainbowBrush is quite simple and fun to use. You simply use your finger as a brush to remove or restore the initial color from regions of your image. Image zooming will help you focus on fine details.