It certainly looks like a single overall colour - hell Blau would be my guess. Sprayed over everything then some "squiggles" added. The underwing roundels have not covered all that well but no Luftwaffe marking to be seen.
As pointed out above, these pictures (and many others) have been posted on the Luftwaffe Experten Message Board. There is an entire thread on this aircraft if memory serves, its identity and history are known.