What a creative and unique shot. Focussing on the fire rather than the man behind add a lot of mood to the shot. A perfect 10. My choice for blue. Only nit would be the white object/bottle at the left side of the photo which distracts a bit.
Unique interpretation of the challenge. I never thought of flames as transparent but sure enough they are. The man in the back looks like a painting and also like he's on fire. I wish you had posed him better. I think it's the gloved hand on the swing side that bothers me. 7