Ceiling light in blender using modifiable shaders. Glass and metal. You can play around with glass shader to get your own effects. This is just my way to give back. I learned shaders through tutorials and looking at how other shaders are put together. Hope these help. I will be uploading specific shaders in time.
BLEND (Blender, filesize: 1.05 MB), OBJ (OBJ, filesize: 47.6 MB)