Glass color, does it devalue certain items if its oxidized/purple?

[idrivemopar]

Question for the gurus here with a picture below of one of the sets that isn't too bad.

I have some older marker/turn signal lens covers from the 40's that are glass and a couple of them have oxidized and turned light purple, does that significantly devalue them?

 

[Photon440]

Your glass hasn't oxidized. The purple is a result of certain glass ingredients, usually maganese dioxide, and with exposure to the UV rays in sunlight it changes colour.

 

[idrivemopar]

Ok, if you want to get technical on the process! LOL But, I still need to know does the change in color make it less valuable?

 

[Photon440]

I would think so. In general, people prefer the original condition.