This was shot at the same time as my purple polka dot shot but with a different gobo giving it entirely different results!
This is four lights. An optical snoot with a gobo provides the pattern. There is a gridded blue fill light (reflector) to color the shadows on the face blue, a purple-gelled light in 33" silver umbrella camera right and behind to add a kiss of light to the back of the hat and shoulders, and a purple light on a black seamless backdrop.
Thanks for sharing your work - love it! And the detailed descriptions are incredibly useful to someone wanting to learn.
Sure, happy to help! :)