I've seen the demos that explain why it wasn't (just) the hydrogen. I've seen the demos (including Mythbusters) that explain why it wasn't (just) the paint.
It seems reasonable that either one without the other wouldn't account for what we saw. Why have I not seen anyone talking about whether it was the combination of the two that did it? All the demos seem intent on demonstrating either, "It was the paint, not the hydrogen," or, "It was the hydrogen, not the paint."
Guys? They had both of those things together. And it did burn. Q. E. fucking D.