/nitpick
officially Lynx can do 16 colors out of 4k possible color combination. But not everyone realizes it is 16 color per scanline. If you really hammer at it, you can change that 16 colors at each line and get Lynx to display 1,632 total colors on screen at once.
Most games were just 16 colors for whole screen though, back in the day you would have had trouble to tell the difference between 16 colors and 64 colors on old technology LCD.