Where studio portraiture often lacks in external interest and bokeh, it makes up for in image quality, clarity, and full light control. However, always shooting on a black or white backdrop is wildly limiting but having a whole host of different backdrops and changing them can be a pain in the proverbial. There is a much easier way to change your background completely in camera using only light and the right shade of gray.
The problem with white backgrounds is that they don't absorb the colored gels on lights very effectively and to change them in post requires the subject to be entirely cut out. The problem with black backgrounds is that it takes very high powered strobes to change them to a lighter color or white. Unsurprisingly, the middle ground is the best option: gray. You want to aim as close to Photoshop's 50% gray as possible as it take colored lights from gels very well, can be easily over-exposed for a pure white background, and easily under-exposed for a black background.
In this video, Joe Edelman goes through just how effective a gray background can be when used in conjunction with strobes and just basic knowledge of lighting. So many beauty portraits are created using exactly this technique and it can even be done on gray walls if they are matte. Edelman does a great job of explaining everything concisely for anyone looking to mix up their studio backgrounds for portraiture or products. Also, make sure you watch to the end for some great tips on how to create colored backgrounds without traditional gels and the sort of results you can attain from these techniques.
I recommend checking out Edelman's YouTube channel as there's some excellent content in there. My only concern is he isn't wearing enough beads.