Sorry to bump this thread out of the grave but I saw an Applejack on ebay just now which reminded me strongly of the question. If you search "My Little Pony Applejack Pat. Pending" there should be a shy pose AJ listing from the UK. Her symbols show a very unique gradient - faded yellow at the top, orange in the middle, and one red down the bottom. My guess is somebody displayed her in a place that got a very specific angle of sunlight each day, and it shows clearly that lighter symbol coloration is due to fading.