This tool was inspired directly by the excellent Creating Color Palettes article by Andy Clarke. It will create 10 shades of the base color, located top-left, at varying degrees of opacity. The top row emulates opacity over a white background, the bottom over black (or colors of your choosing as of v1.4). The opacity values are 100% opaque, 75%, 50%, 25% and 10% on the top row. The bottom row begi