Found this picture in USAAF Aircraft Markings and Camouflage 1941-1947 by Archer Archer (of all places) and thought it was worth posting here. I have never seen pictures of Dorniers being used as Mistel so I thought it may be the final resting place of the "mother ship" for one of the following test programs: Me 328, DFS 228 or Sänger Ram Jet, but no dice. Maybe it was to be used as a Mistel. I don't know. Anyone care to venture a guess? It looks like it carries a night bombing or possibly a maritime camouflage pattern with a light upper surface and a dark (black?) underside.