When you emulate the emulator with no color it will use less RAM, less graphic and less proccess. Look how it works, when you emulate with the color it uses the graphic card, but to use this you need memory and to have memory you need the proccesseur (CPU). So it could save the power to do rest of the emulation by reducing the amount of energie we use in the CPU and the graphic card. So it will go faster. You could put this in Option.
(Emulation Color= Disabled/Enabled) Remember that this option does not make colorswhile emulation, but speeds up emulation.
Stop suggesting useless and stupid things.