I am getting a repainter to have a go, it may be as easy as darkening the alpha channel on the prop_blur texture/s.  I am testing it with another aircraft mod in development at the moment & this has worked quite well, just some further darkening & it will cure the problem...  I will see if that works on the Camel as well, being a wooden propeller may work differently color wise.  If it works, it may be worthwhile adding an optional texture fix for VR users?