There is a lot more to intensifying eye colour than eye makeup.
A warm gold eyeshadow, placed as a dot in the center of the upper eyelid, just above the eyeliner, then covered with the usual matte eyeshadow, adds dimension and accentuates that impossible antique gold in the eye. It is like fire inside the eye. A particle of MAC Woodwinked works well.
There is a simple system that matches up every piece of the makeup puzzle so it works together, and with the person, with their clothes, with their hair. The legwork is done for you forever more. You have a map of your own colouring. Personal Colour Analysis is the GPS that points you directly to your best makeup colours.