return no reason other than doesn't suit

well this is a first after many mant great sales, I sold a leather jacket which is grey and aged to perfection as stated in listing and shown in pictures clearly.

customer wants to return as it doent suit her and she is not happy with that shade of grey, now I included $20 post and am asked to pay her a full refund and return post , since when can you return something as it doesnt suit.??

I will not sell on ebay if this is now how it works 😞        

I would happily refund if damaged or not as described of course but her comment it doesnt suit me well thats not cool