edit:
OK nvm 
Seems i have been filling with “RGB” mode selected instead of “M”.
How do i solve that problem? I have tryied putting my material in “ZStartup/Materials”, and it is in the palette when i restart the program and load the tool, but the tool gets different one than the one it had when it was saved.
p.s.
Yes, i use “fill object”. I have made custom material from metalic with blue tint, into copper-like metalic and filled the object with it. When i restart program and load the tool it gets default metalic with blue tint.