Benjamin Moore Aura Eggshell Medium & deep ColoursBenjamin Moore Aura Interior Eggshell is an innovative interior paint suitable for walls, ceilings, primed wood and primed or previously painted metal surfaces where a real depth of colour is required. A premium, water based formula that self primes and levels itself without the need for over brushing, its a durable choice that can be washed, wiped and scrubbed clean without damaging the colour or finish.