On my xbox i discovered that some outerwear and bottoms accessories for my character are not appearing as the correct color. Some of them include the emerald suitcoat that you get from the achievement of trading 30 emeralds. The other is the DIAMOND crown from the achievement DIAMONDS. The next one is the tool belt trousers from the benchmaking achievement. The last one that I know of is, the creeper hoodie by minecraft. They appear as a light brown instead of their normal colors.