I've been interested in trying some colored gels on my black muslin to give me some variety in my portraits. I've only got a black and white muslin at this point which gets boring. These were taken with gels on two SB-800 flashes set as slaves and aimed at my black muslin. A single AB800 was used in a shoot through umbrella with a reflector for fill. I had quite a bit of spill on my right side despite having the SB-800 behind the subject. I'll have to play with some sort of GOBO. Perhaps the spill is bounced back from the muslin? Any thoughts?