Word, Mn is a little different. Rear lights must be red or amber. The light must be visible in all lighting conditions at 100 ft ( may not be remembering the distance correctly). On the rear, all lights must be white or amber. ANY other color for turn signals, headlights or brake lights are illegal. ANY other light on the car is permitted as long as it it not red or blue (immitating an officer). So green, yellow, etc is all legal.