Gyazo has a minimal user interface consisting of a small set of options available by right clicking the taskbar icon. Launching the application displays a crosshair cursor with which the user selects the area to be uploaded.
Surprisingly, many people think of metal roofs as having limited color options. Perhaps they think the color matches the type of metal. Silver for steel, tin and aluminum; reddish-brown for copper; dark gray for lead. As if those are the extent of the color options.
You can color any metal containing iron, such as steel, with the oven heat of an ordinary kitchen range. Depending on the temperature setting, the steel changes color across a spectrum of shades ranging from pale yellow to dark blue. In addition, literally hundreds of chemicals will change the color of metal surfaces. Some of them are too toxic for amateurs to use. For example, cyanides, nitric acid, chromic acid, mercuric chloride, and lead acetate are hazardous chemicals only professionals should attempt to use.