>>21385034Global/Current ROM brings up a new window which has color schemes for just about every game you can choose from. I could play with the color scheme of Super Mario Land 2, if I wanted. Changing the color scheme in Global affects all games the same way, while Current ROM is just specific to the one game. Although, in order to make the Global scheme take affect, you have to go into Current ROM and pick Global from the list.
I can also pick "Default Grey" to make it look like playing on the Gameboy Pocket. I can even make a custom color scheme.