🔥 Fire performer @alio_the_red burns a line across cobblestone at night, then holds a torch overhead that produces a tall column of green flame. The color comes from copper salts added to the fuel, which shift the flame from orange to green when they combust. The reel captures the raw crackle and roar of the burn at close range. #fire #stuntperformer (Via @alio_the_red) #trial