The Outcast - Gun concept (color)

Hey what is up guys, hope you are all doing well. I've been working hard to get these color concept done for the Unmerciful Thorn . I really wanted something flashy and colorful, very alien like colors. I'm really going to need your help choosing witch colors look best, let me know what 2 color pallets you like the most. It would really help me out a lot. As always ,stay creative guys.