Now Beyond Skyrim Bruma is compatible with whatever interior lighting mods you are using so long as that lighting mod overwrites the vanilla lighting templates and imagespaces. This mod makes BS Bruma use vanilla lighting templates. BS for the most part uses vanilla lighting templates, but there are a dozen locations that use their own lighting templates. For the other 180 or so cells that use the vanilla templates, the patch ensures that they all inherit all aspects of the lighting and fog from the template, so you don't get left with some inappropriately colored fog wall, for example.

I do not recall the composition of all interior lighting mods off the top of my head, but I know for sure that this will work with luminosity. You can check your lighting mod in xEdit to see if it overwrites vanilla records. If it does, then it is compatible. If you are unsure, you can compare against luminosity - for example, if it overwrites all of the changes made by luminosity, then it will be compatible.