Del Lobo variants: These weapons are customized with gold parts because the Del Lobo took over a gold mine, and mexicans are known for liking their weapons with gold/fancy parts (Not trying to sound racist lol)

Murfree variants: The Murfrees blue their weapons to make them rust less, it is known as "bluing" (heat or cold process) and it's basically a passivation process in which steel is partially protected against rust using a black oxide coating. It is named after the blue-black appearance of the resulting protective finish. The Murfrees do that because they live an area with caves and don't have a lot of money. You can notice that only the parts that aren't blue have red rust.