I would like t dye my hair, but I'm in the Junior Reserve Officer Training Corps and one of the rules is if we dye our hair it has to be natural. Would a platinum blonde or a gray be a natural hair color?
Why are you in junior ROTC if all you want to do is break the rules or do something that gives you a loophole around the rules?
Almost nobody has natural plantinum blonde hair and certainly no one your age has natural grey hair. Not to mention everbody knows what color your hair is currently so no matter what color you use they are going to know it's not natural.
My suggestion is drop out of ROTC which just doesn't sound as if you are cut out for then dye your hair purple. If you can't follow rules and regulations then go somewhere that doesn't have any.