Minecraft wiki entry for Skin, associated text: In Java Edition, a skin allows only a solid color; transparency is not allowed on the skin file except on the second layer, which is transparent by default; playing offline, pixels can be left free resulting in "holes" in the skin. If a skin with transparent pixels on the first layer is uploaded, the transparent pixels render as black pixels in-game. There are about 9.571 656 652 × 1031441 possible skins in this edition, with 5.412 073 956 × 1027511 compatible online.