[Primoz]

It's pity the Germans didn't use yellow-tipped prop blades. That would make color determination a little bit easier for us ...

I believe the lion in the second pic is red. The individual letter in the last photo doesn't look any different than the others (so black is the most plausible explanation - though it could have been red). The individual letter 'D' of the first Heinkel certainly looks black but as (IMO) this letter was meant for crew members (so that they could find their a/c in a hurry) black is not a good choice. But not everything was logical in the war ...