This function allows the user to select a color from the color palette as the background color of the graphic display window. The background color is activated by clicking on the Background option in the Display Option menu at the lower right corner of the screen. Once the function is selected, the program displays a dialog window to define background color. The user may click on the color box for top and bottom color of the screen. Once the color box is clicked, the program will display a color palette, as shown in Figure 4.11.1.

igure 4.11.1  Background Color GUI window and Color Palette

The user may select any color in the palette as the top and bottom background color of the graphic display window. The program will change the background color immediately to the desired one, and exit the Color Palette as the color is selected from the palette. Press the ESC key to exit the function without selecting any color. The Default button in the Background Color GUI window resets the background color to default. Unchecking the Background option in the Display Option menu will turn off the background color option.