Site maintained by Point of Presence Company. The most common color problems occur because different monitors offer different color depths. To answer this question, it helps to look at how a computer stores images in memory.
All computers save information as bits.
Because you can't do much with just one instance of on or off, a number of bits are combined to form a byte. In order to save an image, you have to store the vertical and horizontal position of the pixels as well as their color value. This causes the color displayed on the monitor to shift. But dithering can't change the fact that an image that looked great on your monitor may look really bad on someone else's.