Sorry dude, but those sure look like copper to me too.
Couple things to help you and others out:
Gold is very seldom used on traces on equipment like that. The exception is on very sensitive equipment like high end scientific and electronics test equipment, medical devices, military stuff, etc.
Gold most times will look like gold. There is very little that can affect the color of gold.
If in doubt try this:
Take a small piece of 220 or higher grid sandpaper and rub a small section. If its gold the gold color will come back, copper will look pinkish.
You can also use a mixture of vinegar and salt. Rub it on a small section with a small piece of sandpaper, finger, tooth brush etc. Leave it to dry. Once dry if the re was copper, you should see some blue/green stains or crystals.
Hardly a very scientific test, but it'll do in a pinch.
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