The Paralenz camera has a built in red filter that corrects the colors dynamically according to depth. So a light is not mandatory and results are quite good without it.
If you want to get even better results, then a nice mid-range dual light system in the range of 2000-4000 lumens would work great. All lighting kits for GoPro would also work with the Paralenz.
Make sure not to use a light with a narrow beam, as it will wash out in the frame. The best option is a lighting kit that comes with a wide beam of at least 90 degrees or more.
We have Paralenz lighting packages available here.