Why does the wheel go counter clockwise (R-G-B counter clockwise, and R-B-G clockwise)?
The colors go counter clockwise, because that is the way color wheel is created. The color spectrum goes from yellow (this color is always on top, logically, because it is the lightest of all colors, blue is on the bottom, because it is the darkest), through the oranges, reds, magentas and blues, to cyan and green, then back to yellow. This is the natural progression of the spectrum.
