cknox2,
Recently there have been several discoveries of what appears to be crossbreeds between Solorensis and aurantidorsalis fairies.
I'd be more inclined to say that the picture you have is that of a mature female solar fairy. Then again it's tough to say. Young orangeback fairy wrasses (aurantidorsalis) display a very similar coloration.
Here's the difference:
Mature Solar female: the Magenta-red head coloring usually stops mid way through the body then fading into the bright yellow-orange.
Orangeback fairy: The magenta-red-purple coloring is limited to the face....no further than the gills....kinda like a mask. Then you get a a magenta purple line that is horizontal to the entire length of the body. This magenta-purple line divides the fish horizontally from the top half which is bright yellow-orange (hence the name orangeback or aurantidorsalis) and the bottom half which is a bright neon blue.
Again, my take is you have a female solar there. Lots of times labled as ruby head fairy wrasse by many LFS's that don't realize what they have.