The screen color might be appeared differently, which is depended on the brand of monitors or displays; if the color appears to be dirty or darker, then the brightness and contrast are needed to be turn-up; if the color red, blue, green or yellow is a off color then the monitor or LCD temperature colors (red, green, blue) are needed to be reset to manufacture default setting.
Changing Background Color.
Aqua Black Blue Blue violet Chocolate Dark goldenrod Firebrick Fuchsia Gold Gray
Green Hot Pink Indigo Lime Maroon Navy Olive Orange Pale turquoise Peach puff
Purple Red Salmon Sea green Sienna Silver Tan Teal Yellow