Being a cooling stone, it has a soft, soothing elegance that is used to cure insomnia, promote strength and healing, and ensure a healthy life. Unable to find a paint that you used to use? Has something been discontinued? Want to find the equivalent paint in a different range? Here is the ultimate painting matrix, comparing the games workshop Citadel paints with every known equivalent. Agate Chemical Formula: SiO 2 Color: Light Blue Blue Lace Agate, as it is known, is usually banded in layers of light blue, bright blue stripes, and threads of brown.