When I used to use photoshop, I experimented with coloring grayscale artwork as well as photos. I generally used a combination of a gradient map and multiple color palettes. For example, to color the skin, I'd get a skin color palette (usually from ColorHunt), put it into a gradient map, fiddle with the gradient map controls until I get it the way I like, then experiment with the layer mode (multiply, soft light, overlay, etc.). Once I'm satisfied, I give the layer a mask and paint black in the areas I didn't want the gradient map to cover. This was a long process since I had to make a gradient map for different sections (skin, clothes, eyes, etc.), but the beauty of it is I could change the colors anytime with little issue. In other words, time consuming at first, but highly customizable in the long run. As far as I know, Krita has yet to fully have this feature, but maybe in the future? Or perhaps it has a different way of doing it? I've only completed 2 colored pieces using this method, but I really liked the results, so I'm hoping I can do this in Krita some time in the near future.

Overlay is good blending mode too.

This was so helpful! And it came out great

Thank you for posting this video!

Thank u Man, this vídeo helps a lot, please keep It on:)))

Beautiful ❤️

😶super !