Alright, I've been putting a lot of thought into this subject. I understand that UV rays can potentially fade colors on a card. I still have a hard time believing that it will completely remove a color though, to the point that you can't even tell the color was ever there. I understand many disagree with this.
With that being said- if a card sat in the sun for so long that it completely removed *let's say the color red
* from the card- wouldn't the sun also degrade the composition of the paper as well? Would the sun's UV rays make the paper brittle? Not trying to sway the conversation into another direction, but I thought this was worth bringing up. The point I'm trying to make is-in my mind, a card would have to sit under direct sunlight for a pretty long time to completely remove a whole color-so, wouldn't we also be able to tell by the cardboard that this was a sun soaked card we were looking at?
Thanks for all well thought out and informative input-
Sincerely, Clayton