From my AF experience...not quite true. I always thought that you couldn't have any color blindness, but when I was the DO I was educated by the flight surgeons. I know of two pilots in my squadron who have some level of color blindness. Whenever they move to a new airframe, they have to take a test in the sim to ensure that they can tell the difference between the colors on the appropriate displays. The test was administered by a squadron EP or IP and then the waiver authority was the squadron Commander. It is actually pretty low level stuff.
So back to epic...depending on the severity of the color issues, it may be waiverable by the commanding officer.