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Hoi Theo,
Hmmm, yes I'm pretty sure this is luniger. The spots have a typical shape for luniger. Corollae males sometimes have spots that are not connected in the middle like in this picture, look for example at this:
http://www.veluwe-insecten.nl/zweefvliegen/eupeodes/eupeodes.html
But than the shape is still somewhat different.
The next point (and the strongest I think) is that the males of corollae have a big genital knob, clearly distinguishable from above.
In this picture we see (although a bit blurry) a male with a quite small genital knob, in corollae it would have been much bigger and broader in comparison with the size of the abdomen.
So I still think this is luniger.
The color you mention is maybe due to the angle of photographing and the use of flash or something like that!
Greetings,