It’s been 6 days since I boldly hung out the tannined samples to test them for lightfastness. It’s been hot (which shouldn’t make any difference) and brightly sunny. It rained today, so I pulled them in and I’ll call the test complete.
I must admit that I really wanted to wrap up the test…the colors started so nice and bright and even at best, they were going to dim. Although all of them did fade, I think that the Gall nut did maintain it’s color the best. I have to conclude that any fabric color will fade given enough time and light.