Keep at least one white one in there. If you're doing medical stuff, you will want white light most of the time to identify what's blood and what's not.
That said, I keep white, blue, and orange in my medical stuff. Reasoning: The blue helps find blood against light backgrounds (like skin, concrete, etc.). It also isn't so bright as to kill your night vision, and I believe blue light has the shortest throw, so it's the least likely to be spotted from afar. The orange is in there for marking and rescue purposes. Orange wavelengths cut through fog easier than any other color (which is why your fog lamps are orange, and orange sodium lamps are on the sides of highways and roads. Orange is kind of a universal safety/rescue color.
You still need white light. I would advise against krill lights due to low output. Not really enough to work by, especially when you need some LIGHT, or in twilight, where your eyes are less than completely adjusted to the dark.