The coin is toned, but if you don't like the toning your best bet is to sell it or trade it for one you do like. Bottom line there's nothing that could be done to that coin short of dipping it that would change anything.
Fooling copper and bronze coins usually does more damage than good. If you don’t like the look of a large number of copper coins, it’s best to let that coin go and find another one.
It's original. If you change anything it won't be anymore. As said, if you don't like it sell it to someone that will appreciate it and by a replacement. Also, getting it "conserved" will cost you at least $20 plus the cost of slabbing and shipping. That is called "more brains than money."
