Is there a one-button solution to copying the color value from the Base Color to the Viewport Display color?
just use the color picker !
happy bl
Ah, that’s pretty good, although the color you want might not be on the screen.
Is there a cut&paste for color fields?
Hover over the field (don’t click) and hit Ctrl+C, then hover over another (don’t click) and hit Ctrl+V. Works for most (all?) fields in Blender, not only colors.
Speaking of color fields or any other fields that have a picker, you can just hover over and press E, this will activate the picker right away.
This addon looks like it will do what you want.
https://www.blendernation.com/2020/03/06/free-addon-to-set-viewport-color-based-on-nodetree/
I’m looking for this. Thank you!