Yes, I put color blocks only as an example to show that in the pink of the scope and barrel were not with solid colors, but were worn and in places barely appeared. I even adjusting the condition and parameters of the pattern, the problem still remained. But I did what you said about the alpha channel mask and it worked, the color was as I wanted when I tested again. But I could also fix it any other way? I'm still learning about the techniques for creating skins, I am very beginner with photoshop then had no idea how to solve this. Thank you so much.