Costa Del Mar question

[drewmar74]

Fellas-

I have a pair of Costa's with the blue mirror 400 lenses. Love the dang things.

The only problem I've had with them is that the blue mirror finish starts to fade around where the lens meets the frames. I've actually had this happen twice.

The first time it was both lenses and the finish faded all the way around the lenses. I sent them back in to Costa and they replaced the lenses. I just noticed on Monday that one of the lenses is starting to do it AGAIN.

I only clean these things with water (occasionally) and a lens cloth.

Anyone else had this problem? Can anyone see something I'm doing to cause these problems?

Thanks in advance for any feedback you can give me....