Hi elodakielod,
Have you tried exposing the Material parameter directly from the mesh component in your Blueprint? I know there are instances where you will need to manipulate variables, but that might be a workaround for your situation.
I put in a request for construction script updates as you manipulate BP variables in Sequencer (UE-31193). You’d have to set your color in the construction script for in-editor updates, then update on tick in the event graph for gameplay.
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