There are two display windows. There are no interactive
controls attached to either window.
The window in the upper left corner is composed of two viewports. The left viewport displays the RGB color cube while the right viewport displays the HSV hexcone. The ball in each model is at the currently selected color (red initially) and is moved as you change the color using the parameter input window.
The window centered on the right displays a swatch of the currently selected color. The swatch is updated as you change
the values in the parameter input window. The swatch is initially red.