This is also happing to me with Magix Vegas Pro V16 it works fine with BORIX FX Continuum 12.0.5, but V17 produces that weird colour effect ( the red changes to blue. )
Lot of chat about it on the Magix Forum.
I also found that if I add any Boris effect and the colours change , then add the Colour Balance BORIS FX , it corrects itself without adjusting any on the sliders..
It is the same with GPU Off or On