Color Matching Spray Paint

I often times use spray paint to refinish furniture hardware.  Occasionally, I'll want to highlight some of the furniture itself with the same color paint but am unable to use a spray can for the detail work.  Does anyone has a suggestion for color matching common spray paint colors?  As an example, I sprayed the drawer pulls but had to hand paint the dresser details on the attached picture.  I had to try several times before I found a gold that matched - quite a hassle.