Dell Projector 2200MP - Manual (Page 19)

Brightness
Adjusts the brightness of the image.
Press to darken the image.
Press to lighten the image.
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 to decrease the contrast.
Press to increase the contrast.
Color Temp.
Adjusts the color temperature. With the higher temperature, the screen looks colder;
with the lower temperature, the screen looks warmer. User mode activates the values
in the "color setting" menu.
Color Setting