@JM, first welcome to CCF. Second, this dime didn't leave the mint with this color, but could have been gold-plated or perhaps toned to a golden color. It would be helpful if you could post front and back pics of this coin. Thx.
"If you climb a good tree, you get a push." -----Ghanaian proverb
"The danger we all now face is distinguishing between what is authentic and what is performed." -----King Adz