So apparently the new version of Clip Studio Paint (Manga Studio's successor) has an experimental feature that lets you throw a few blobs of color on your line-art, hit a button, and then the AI will use the colors you splotched down to color the rest of the line-art, even coloring the lines themselves if you want.
One side of my brain is yelling how this is lazy and you'll never get a perfect representation of what you really want, and the other is screaming, "Holy shit! I could knock commissions out in two-thirds of the time!" This is especially tempting for me given how, while I always do my absolute best at it, I've never been that invested in, or good at, the coloring process. Anything that could streamline that and allow me to move on to the next thing I can be creative on would be a help (assuming it works as advertised).
In any case, probably high time I bite the bullet and start scraping together funds for an upgrade. The other new features alone are making me think it's worth it.