We Know That the GIF Standard Can Request a Different

Essay

We know that the GIF standard can request a different number of bits than the number stored in the actual raster data in the file. Suppose that an output device allows only a few bits for color resolution (a wristwatch web-enabled wireless device, for example).
(a) How should our output device deal with the higher color resolution color LUT codes it receives? (Note that exactly this situation is in the GIF standard.)
(b) Suppose that the output device cannot display 24-bit color. To make sensible color output, how should the 24-bit colors in the color LUT be handled for output on a display with lower color resolution than 24-bit?