80-90% grey background with 10-15% grey foreground (text) is an ideal contrast ratio/color scheme, for me. It doesn't burn my eyes out at night on my panels, in

80-90% grey background with 10-15% grey foreground (text) is an ideal contrast ratio/color scheme, for me. It doesn't burn my eyes out at night on my panels, in contrast to white-on-black schemes. During the day, though, black-on-white all the way.