I saw the gold and black at the store. I went with gold. It looks way sexier than black. I wanted silver bur they didn't have any. I actually loved the gold as soon as I saw it in person. It's beautiful.
I have the gold s7 edge. It's not the same color as the gold s6 edge+. It can reflect gold with copper hues. I like it more refined. But honestly it so many different shades under different light.
All personal preference, of course, but my Gold S7 edge is the best looking phone I've ever owned. The video above is very accurate as to color and "shininess". It's super flashy...and I love it!
Any color other than black ruins the flow from the screen into the bezel. Black to black makes it look like one big screen. Any other color frames the screen and makes it look smaller. In other words, it looks like an iPhone.