Blue Black Panel Wash. Perfect for dark shades of metallic surfaces such as jet engines and lower parts of natural metal aircraft. It is also useful for ships, Science Fiction subjects, and any vehicle on dark greys or dark metals. Our Panel Line Wash range is specially designed to create soft washed panel lines in aircraft. It is also perfect for other vehicles where we want to obtain subtle effects such as science fiction subjects, ships and trains. Apply on details and remove excess with a clean brush moist in Enamel Thinner.