i had bought the eye glasses half frame copper colour and it's still in the warrantte period, i send it back to the dealer to change the side arms ( no plastic only one piece of metal) as it's colour disappeared .
Firstly they refer it the Technical section and they advised this is normal to happen, This answer is not accepted from my side as I'm a permenant customer to Magharaby's egypt and especially to Calvin Klien.
kindly need ur prompet interfence to solve this problem.