The ability to convert all images to gray scale or black and white. Sometimes the images in Black and white because it prints better. But also gives more flexibility to our layouts. The color picker And opacity selection could then be combined when editing an image so that I can create watermarks or stationery. I can also see this feature helping to create shadows with layering. It would be cool to also be able to convert multi color images to a monochromatic color. For example shades iof green.