It started as an experiment for me. I was trying to figure out why some older cordovan shoes looked less purple and more brown. My hypothesis was that sunlight was the primary cause of the color change. I left my boots in the sun for a number of weeks before the color change became readily apparent. I remember Nick Horween has confirmed this effect somewhere. I recently begun to leave my Indy boots where it can receive sunlight again to try to get it back to the condition they were in before Alden restoration dyed them back. The color fade seems to have been much more rapid the second time around.Regarding the faded cordovan. I have a number of older cordovan shoes and none have faded anywhere near those of the pics above. Do you guys leave them in the sun to fade?