>>34513171Inside the folders there is an "images" folder that contains all the textures you'll need to edit. It might be confusing if you've never looked at video game textures before, but basically imagine the 3D model unwrapped and flattened into the textures you see there.
In order to edit them you can simply open up the images and swap out the colours, but you won't know what it looks like without re-adding them into the game or opening it up with a 3D model viewer. It's a bit of a tricky process.
Just remember that you don't need to edit absolutely every image, as some are normal maps or masks. But any image you see that has solid colours that you recognize as part of the pokemon can probably safely be assumed as the part of the texture set you need to edit.