Sorry if it's been asked before. I didn't find anything...

Is it possible or could it be made possible to adjust the saturation of what we see on screen, whether it be a slider like we use for brightness, etc, or another method? I had an idea for a small black and white project, which I probably won't ever make, but the thought of desaturating all of the textures for all of the models I would use is just not something I would want to mess with.

I know it probably wouldn't be an often used feature, but it could be interesting to try and may prove more useful than it seems at first thought. I feel like there is a simple solution but I have no idea.