Blue Dirt Panel Wash. Perfect for blue surfaces such as lower parts of WW II Russian aircraft. It is also useful for ships, Science Fiction subjects, and any vehicle on blue tones. 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.