Definition - What does Dry Color mean?
A dry color is a powdered color that is mixed with water, alcohol or mineral spirits and resin to form a paint or stain, which is then applied to a surface needing corrosion protection. Industrial paints or coatings often do not have any pre-existing colors - they receive their color by mixing dry colors in the liquid paint solution.
Corrosionpedia explains Dry Color
Dry colors are completely soluble when mixed in water, alcohol or any kind of spirit to prepare a thick viscous colored liquid. The thick colored liquid is mixed with paint, stain or any other coating material and applied to industrial equipment. Dry color manufacturers have specific goals such as minimizing the film thickness. Dry colors are available per ISO 12944 specifications.