I have a new love, and it's mustard yellow or, more professionally speaking, golden rod. I crowned it the best color for fall, in my life. It speaks to me! But, it speaks to me in reasonable doses. Doses like a clutch bag, blouse, or dress with a print. Maybe even in a scarf, piece of resin jewelry, or a shoe accent. Just remember it's bold and could easily be overwhelming if over done. That's really just the general rule of color.
Gone are the days of matching all your colors and outrageous color pairing. Today understated is best with pattern and texture. Fashion should be quirky, a tad risky, and crazy creative. When it's true it has incredible character.
Moral of this story is... golden rod.