Does the yellow help with the levitation act do you suppose? It must. Otherwise, why add THAT much yellow? I bet it distracts everyone by how bad the magic show is. Illusions by yellow!
Being an immortal, Connor's acrophobia made even less sense. But Jane allowed him to "swing" her from five inches off the ground anyway. Personally, she'd just as soon walk. Or maybe ride the bus.
It's like a "plot" from some porno. Delivery man arrives with a bouquet from sub-standard boyfriend, so to make up for the lack, offers himself instead.