A palette, in
computer graphics, is a designated subset of the total range of colors supported by a
computer graphics system. Each color in the palette is assigned a number, and for each
pixel, one of these numbers is stored. This number determines the color of the pixel.Graphics modes with low
color depths (generally, from 4 to 8 bits) usually have a modifiable palette, also referred to as pseudocolor palette, that contains indices to the full palette of the display hardware. For instance, in the 256-color modes of the original
VGA, each of the colors can be chosen from a total palette of 262,144 colors. Pseudocolor allows images comprising a small number of colors to be stored using a relatively modest amount of graphics memory.
See more at Wikipedia.org...