That's an area of discrepancy I'm working on. Most "modern" profiles have them painted the base turquoise color (which is close to RLM-78 blue) but in the photo's of the actual plane I have, they are very dark, see below.


This is the Spring 1918 paint scheme that perdweeb was looking at on the modern Dr.1

The only evidence I have that it might have been the blue color is this image. If you look at the cowl you'll see that the front face isn't painted white yet which makes me think this is a very early shot before it received it's Jasta Boelcke paint scheme.

I have done a version with it as the blue as well, just in case, but I think it's more accurate for the May 1918 paint scheme to be dark.
<S> Baumer