NOTICE: There is an extra step you must take that I did not take to avoid uploading a the model that would technically be changed from its source game if I did.

This model uses both image textures and color attributes. Each of those things have a node in Blender of the same name, which you can link to a Mix Color node's A and B ports. Then set the Factor to 1 and change "Mix" to "Multiply," which should make the model look correct. If you are using a different program, try to find a way to link both image textures and color attributes however your program can do it.