How to change weapon skins

Hello guys i want to know how to change weapon skins.

I tried by changing the colours of the files but when i went in game nothing happened. I did the same of the colour of the charcters and it worked

Help?

i have the same problem !! wee

first select >> Texture >> weapon >> edit what you want in 1st and 3rd_weapon

i wanted to know to but i found out