The Bismarck colors were very simple.
-The main hull is light gray.
-The stripes of camouflage black and white
-The deck was made of teak, and wasn't painted.
-The conflict about turrets top color is to forget, they were the same color of the hull,
not red or anything else.
The Prinz Eugen yes, the top of turrets were red, for some especific time of war.
Visit this page to see. http://www.prinzeugen.com/
Best regards.