That's cool, glad it worked for you . I know a fair bit about 3d modelling, but 3d lighting/rendering has always been torture for me. Probably because I had to try to learn that on an older version of 3ds max maybe 12 years ago. I enjoy the drawing part, so that's always the best way for me to do things.
I did google some tutorials for 2d lighting in Unity, which i use, and it does seem to be fairly straightforward, so you basically talked me into checking it out. I do see that it tends to mess a bit with the original look of 2d sprites, but that probably depends on how the lighting is used. I imagine it could work well in my case