This is one where I can't give a response to the selective colouring.
Personally, I loathe it and think it ruins elmost every image to which it's applied. However here, I don't think the picture would work without it.
Nice catch, regardless, though, and lovely DOF... sure it would be better if the chair wasn't there (i.e the typical frolicking against a dark background), but given the circumstances, it's really great!