[triclops200]

We already do and have done historically. The most obvious example I know of is that 8bit color uses 3 bits for green and red and 2 for blue.

[_0ffh]

For some time many graphics cards had a 16 bit "hi-color" mode with 5:6:5 bits for RGB (SVGA, etc.). Most graphics card modes that used only 8 bits per pixel used that value as an index into an 256x(8x3) bit color palette (MCGA, VGA, etc.).