Add different colors on each face of the cube (primitive shape) using ShaderGraph

I create a simple primitive shape and I want to add colors on each faces of the cube. I was thinking using Shape Graph, but I have no idea on how to specify each faces with a different color. Any lead or help would be great. This tech is new so help documentions is very low

Add different colors on each face of the cube (primitive shape) using ShaderGraph
 
 
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