Hey. I replied to this earlier but cannot see my own reply now ... hmmm. Just to make sure. The package is setup for multiple purposes. Most of the textures work for additive shading. There transparent areas need to be black, but you can save on additional memory usage. Using Alpha Cut shaders also works based on colour. If you need the alpha channel most tools can turn grey values into alpha information. Whih software are you using the textures in?