Dell 3100MP User Manual page 17

Image-I (Video Mode)
Brightness
Adjusts the brightness of the image.
Press
Press
Contrast
Controls the degree of difference between the lightest and darkest parts of the picture.
Adjusting the contrast changes the amount of black and white in the image.
Press
Press
Color
Adjusts a video image from black and white to fully saturated color.
Press
Press
Sharpness
Adjusts the sharpness of the image.
Press
Press
Tint
Adjusts the color balance of red and green.
Press
Press
to darken the image.
to lighten the image.
to decrease the contrast.
to increase the contrast.
to decrease the amount of color in the image.
to increase the amount of color in the image.
to decrease the sharpness.
to increase the sharpness.
to increase the amount of green in the image.
to increase the amount of red in the image.