Why light blue for the Tactical Category?
Why dark blue for the Aviation Category?
"The branch colors for aviation were approved concurrently with the branch insignia on 7 August 1983 by the Chief of Staff Army. These colors were used by the Army Air Corps during its existence."
Why gold for the K9 Category?
"The color yellow piped with green was assigned to the Military Police by AR 600-35 dated 20 April 1922. With the establishment of yellow for the Armor and the use of green for the insignia on the Armor flag, the colors for the Military Police were reversed. The current colors, green piped with yellow, were assigned by regulation 600-60-1 dated 26 October 1951."
Why gray for the EDC/LEO Category?
"A man who can blend in to any scene or situation without standing out , hiding his skills and qualities ."
"Gray man, simply put, means deep concealment. You firearm, spare magazines, flashlight, etc, has to be completely unseen in normal-for-area attire. Maybe you live where shorts, a white t-shirt and Hawaiian shirt untucked are normal. You can carry a pretty decent hand howitzer under that. If you are in an upscale yuppy area, you may need to have a pocket holster for your spare mag and flashlight and a holster than can have your polo shirt tucked in behind the clip.
When do you want to be the "gray man"? Pretty much any time you are going about your day-to-day life. In a crisis situation where you HAVE to travel in the midst of a bunch of people, Grey man is the only way to move about, just hope you don't get searched. In KISSATA terms, most of your recon in towns/cities, or where there's a lot of traffic, you're best off doing it grey man style."