First "Set_Language.sci" allows you to choose the language of the
application
by a click on the country flag.
With "Cube_Color_Browser.sce", you can explore the complete solid
colors cube :
Each color is a point of the cube.
All colors for a particular brightness (from Black to White) are shown on the
screen as a slice of the cube.
Brightness is set with a range (1 to 100) slider.
When you select a color by a click, the color and its brightness scale are
displayed.