When shooting, make it a habit to open it first. Even if you dont see the need, place on the floor or nearby the model. Little amt of catchlights in the eyes, help to create the liveliness in the model.
i think that gold suits for white skin people. when we 'yellow' skin people use gold it make our skin more warm. but i use it still during beach or during some outdoor shoot to mtach the model outfit and theme.