Because gold is a neutral color.
The blog might be colorful, but by now, most of you know that I usually prefer wearing black... all black. However, I do sometimes wear "colors" such as denim (lol), army green and gold. Yes, gold is a color. I strongly believe those 3 "colors" are neutrals. Pretty much everything goes with black, jeans, army green and metallics, no? Am I right? Right.