Orange felt was a color error or perhaps a test patch. This variation was worn by USAAF personnel for a short while in early WW2.(This particular patch was never used/sewn on anything). Example on uniform shown in photos in an old ASMIC Trading Post magazine. British Commonwealth, France, many other nations in Western Europe & a few others world wide. The item "US Army Air Forces WW2 orange felt color variation" is in sale since Sunday, May 26, 2019. This item is in the category "Collectibles\Militaria\WW II (1939-45)\Original Period Items\United States\Patches".
The seller is "diablovalleyantiqueprints" and is located in San Francisco Bay Area. This item can be shipped worldwide.