I too am looking at replacing out a light. The fixture I have is extremely old; there's a container holding the bulb that's 6" deep, 2 3/4" diameter at the back, and 5" diameter at the front. I'm going to look around for an LED replacement.

The alternative, according to one estimate, is to pay $2859 to replace the light niche, upgrade to a colored LED, and install 40 feet of conduit/J-box/GFI (all but the niche of which I planned on doing myself anyway).

If kelemvor or anyone else has recommendations on a replacement fixture, I'd appreciate hearing them. (I'm not quite sure if I can just look for a complete fixture to fit within the existing niche, or if I really do need to bite the bullet and pay for a new niche; I'm hoping that it's not the latter...).