I run into a problem and i hope there is anybody who can explain how to do this.
I am using Redshift (but I think this probably is also the same with other renderers)
Say I have a Red and a Green material.
Now I want to make a third (Yellow) material where I want to create a blend of the Red and Green ones.
How will I get an instance of the Red node graph and Green node graph materials in the Yellow node graph so that when I adjust the Red material, the one in the Yellow also updates.