Identical Combat Uniforms for all Branches

Considering the ridiculous expenditure of money that has been spent on uniforms, all branches should adopt the same Combat Uniform(s). There can be several ones for different environments IE woodland, desert etc, but it is a absolute waste of money to have different uniforms for every branch. Why have we as a nation wasted hundreds of millions on ACUs and AF Service uniform which offer no camouflage unless you are fighting in a stone quarry. And who is the genius who thought blue uniforms were good at sea? You don't blend into the ship and if you fall overboard no one can see you. It does not seem to make much sense.
That is one area that would save hundreds of millions of dollars.
I believe the best choice would be the MARPAT uniform.

So should the different branches cooperate and have one uniform and what choice would be best?