Does ostrich skin turn darker if kept in storage bag?

It's rouge VIF and i've kept it in the sleeper. Since some have mentioned that the skin will lighten in the sunlight, I wonder if it does the opposite if kept in the dark. I'm having a crazy idea that darkened handles will lighten if one leaves it out in the sunlight for a bit, covering rest of the bag, hanging upside down along with air drying lingerie. But of course, that is just an experiment no one will take and who know what will happen when moonlight hits...yikes.
I noticed the pores of the ostrich a tad darker than what I remembered, but it may be developing a pretty patina that I have seen on some honey ostrich over time. So, off to the closet it goes, since I'm not leading an ostrich H life now....