Control several different materials via one slider I have to set up an exterior architecture scene&hellip; to make it more lively I put a lot of silhouettes into the scene. They are planes mapped to transparency with a mask in cycles. Now I have to change color of all of these "people".

Because this will take lots of clicks to do, I was wondering if there is a way to set up a property in an object that controls a property (RGB in this case) for many objects. I tried a driver but didn't fully grasp it. To do this in post-production is not so ideal because the reflection doesn't work&hellip; (if I mask the people out).

Alternatively, is there a way to copy only one property of an object to several others? (Like linking only the RGB between these objects?)
If using node materials you could use a node group:


Simply creating a the group containing just a RGB node.


Add > Input > RGB and Add > Group > Make Group.
or ShiftA, I, R (if it gives you Render Layer Node, then it's G), CtrlG.

Go to parent node tree (leave the new group)
For each material Add > Group > (Group Name) and use that as your color.


Edits to the group will effect all instances.