"Silver skin" with "golden blood" (said by Macbeth) ?
• Silver symbolises wealth & success and better known as a noble metal. Reflects king duncan and his rightful claim to the throne
• Silver is believed to be a mirror to the soul, helping us to see ourselves as others see us. Conveys Duncan as honest and someone who one his heart on his sleeve
• Silver is believed to draw negative energy out of the body and replace it with positive energy. This reaffirms Duncan was the perfect fit to be king