I've only got two sources: one is an IPMS Austria decal sheet for the Ju 86 and the other is this photo:
http://www.luftwaffepics.com/LCBW/Ju86E-3.jpg
The latter could be a Hungarian Ju 86 (considering the intake under the engine and "something" (I'm afraid I don't know what it is) above (aft of the engine, that is). It isn't Swedish, but Swedish Ju 86s were painted RLM 61/62/63 anyway as you've pointed out (I think I've seen a color photo somewhere sometime ...).
It's not really an airtight case but the IPMS Austria sheet seems to be well researched.