The panel is where the gradient type and colors are specified. The tool is used to adjust the appearance of the gradient. ... Underneath are two Color Stops that allow you to adjust the physical location in the object where 100% color starts to feather. To change the colors, double-click each of the Color Stops
C and D. Pop art has many vibrant colors that are used on many pop culture idols. For example, Andy Warhol does many pop art works. Look him up if you want :)