GS Typing Tutor enables the user to change its color style. You could drag the slider button and move to
change the hue and saturation of the user interface. You always select an existing color theme in the present list.
Hue
Specifies the hue value of the user interface.
Saturation
Specifies the saturation value of the user interface.
Present
Lists the existing color themes.
Full screen
Specifies whether the program launches under the full-screen mode.
