Another thought about meerschaum storage.... Don't keep them where a florescent light shines on them. It can bleach out the coloring. However, in some cases the color will return in time. Don't ask me how or why... it's weird.
Good point.
I store mine in my cabinet, and I only use a few lamps for light in my shop as the over-head florescent bulb is too bright for me when I want to relax with a pipe or cigar. So, it's not the florescent bulb, but I have noticed that if I haven't smoked a meerschaum in a while (i.e. months) the pipe seems to lose some of its color. Once I start smoking them again, the color comes back like before. It's weird.
Another thing that will ruin your color is if you're re-waxing your pipe, and you over-heat the pipe when removing the excess wax. It basically bleaches the color right out. Definitely not what you want to do with your pipe.