New RAW converter Photo Ninja boost Olympus OMD quality.

Out of interest are you sure that it is PN's color rendition of the 'blue' that is wrong. I find that LR tends to generate slightly 'odd' blues off the OMD - particularly say evening skies that seem to turn out bright blue when they werent.

Here is the same photo converted by LR and DXO at defaults.

LR

DXO