Selective color is a post-processing technique where most of a photo is converted to black and white, but some parts are left in color. This is usually achieved by using layers and masks in photo editing software (Photoshop, SilverFast, Adobe Fireworks or The GIMP for example). A common application for selective color is portraiture, to keep the eyes and sometimes the lips in color, against an otherwise black and white photograph. Small regions of color in an otherwise monochrome image immediately draw the viewer's eye.