Lcd Brightness; Info Display Format - Nikon D3100 Reference Manual

LCD Brightness

Press 1 or 3 to choose monitor brightness. Choose higher
values for increased brightness, lower values for reduced
brightness.

Info Display Format

Choose from the following two formats for the information display (0 6).
Classic (0 138)
1
Select a format.
Highlight an option and press 2.
2
Select a background color.
Highlight a background color and press J.
Choose from blue, black, or orange (Classic) or
green, black, or brown (Graphic).
G button B setup menu
G button B setup menu
Graphic (0 6)
g
137