thank you everyone for all your advice!!!
the color i really wanted to get at was the actual mustang color "dark candy apple red". I didn't know when i bought the paint that it needed a basecoat, and as someone said, the gold leaves it more orange, which i want it to be the dark red. copper would do darker orange i think. if i did get a red spraypaint would that make my candy color not show up? i do want it to be darker, just red, not tinted orange or dark orange or anything.