What is the color of zinc sulphate, ferrous sulphate, copper sulphate and aluminium sulphate?

What is the color of zinc sulphate, ferrous sulphate, copper sulphate and aluminium sulphate ? When we add aluminium metal in ferrous sulphate, what is the color ? When we add aluminium metal in copper sulphate what is the color ?

Zinc sulphate: Colorless

Ferrous sulphate: Light green

Copper sulphate: Blue

Aluminium sulphate: colorless

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