I would like to be able to change the fill color of different shape layer at once.
I imagine there is a way to link/parent the fill color property across different layer but could not find how.
Would you know, if this is possible-
You can add an expression to the fill color parameter (also the outline) and then pickwhip another shape layer's color. When you change the one that all the layers are pickwhipped to, they will all change.