I started building my theater a few weeks ago. I'm going with a shadowboxed screenwall similar to Larry's. I bought my black speaker cloth for my panels from JoAnn's. Well I got about to the midway point on completing the panels when I noticed that the color slightly changed. It appears that the first have looks almost charcoal grey compared to the latest panels which look black. It wasn't noticable until they were mounted next to each other. I'm not a happy camper.