I don't believe this is grafting from flouro protein transfer. It is possible though.
The ORA tricolor will get those green tips. I agree yours looks odd/different, but I think it is a result of some condition/parameter that makes the green tip color "bleed" more into the body tissue color.
As to "grafting" as a term, I work in the horticulture industry and I have always taken "grafting" in the sense of coral aquaculture to be a totally different concept as grafting in the hort industry.
Grafted trees are generally a cut shoot fused onto a different rootstock. This is done for cold-hardiness of citrus trees and many other applications.
Grafting of corals is introducing zooxanthellae from one coral into the tissue of another. We can't simply graft one coral "onto" the other like with trees because the symbiotic dinos that are the zoox are intermixing and interacting/competing until they stabilize within the cytoplasm of the corals' tissue. Thus we end up with spots, swirls, strange markings, etc. where the foreign zoox has stabilized within the host tissue. I've had this happen in my tank with orange Monti. cap. when Seriatopora polyp bailout caused green spots in the orange tissue.
I hold the position that yours is not "grafted" because it does not appear to be foreign zoox affecting the host tissue, but rather the host zoox performing in an unusual manner.
Just my thoughts and opinions....hope this helps!
-Ed