Not in Ken Merrick's book? I don't have the Jaroslaw Wrobel's
"Camouflage and Markings, Luftwaffe 1933-45," with the Fw189 night reconnaissance. Fourth edition. (think this one had night fighters/recon). I agree with RLM 22 on bottom. Maybe a mix of RLM 74 and 75 on top?
Will need to look through my references.
Luftwaffe Camouflage and Markings, 1933-1945, Vol. 2