From a totally personal stand-point, I feel like blue uniforms makes the officers seem more approachable somehow. Red just feels so, I dunno, aggressive, I guess. Maybe it'll help with the negative stereotype about harmbatoning officers if they're dressed in a more neutral/calm colour. I dunno, I'm not a colour scientist, dammit.
Looking back on what I wrote, it does make me think of the time my home-town police force gave officers baseball hats to "make them more approachable to the youth" or whatever. I dunno, I guess they're still just cops...
Tangent aside, I really dig the new colour scheme for security, though I agree with the whole "tone down the gold" idea.