Re: The Kelvin's uniforms
It looks like on all the gold shirts, it is gold and on the blue shirt it is silver, so it could be just reflecting (and silver).
I think that the gold shirts do make the insignia look more goldish due to reflection, yes.
"STAR TREK is... Action - Adventure - Science Fiction."
-- Gene Roddenberry, 1964, top of the first page of his original pitch and outline for Star Trek