CGA was prolly better in B&W. The colour palettes were horrendous! :)
Yep, you had the choice between 320x240 4 color from 3 palettes, either:
palette 0 magenta cyan white black
palette 1 red green yellow black
palette 2 red cyan white black (tended to be machine specific, otherwise it would use palette 0)
OR
16 shade dithered hash monocrome @ 640x240
Which was the prefered option for sierra games because if you stood far away enough from the screen it looked very 'good' in fact ive got a lot of respect for those artists who could make a scene from such crap limits :)