Red, Green and Blue
Recall that colors are created on the screen with a combination of three colors of light -- red, green, blue
When drawing, one can specify the exact color by calling a procedure, RGB(r, g, b) whose three parameters are the contribution of the three colors in the range 0 -- 255
- RGB(0, 0, 0)
- RGB(255, 0, 0)
- RGB(0, 255, 0)
- RGB(0, 0, 255)
- RGB(255,255,255)