Just experimenting with styles. Trying to draw without lines, just color. Not sure if I'll repeat the experiment because this does take a lot longer, as you can tell by watching the time lapse video (which is about twice as long as my typical QuickPaint drawings).
Also, no black and white line art image, but here is the pencil sketch that I used before colorizing... I was curious to see how different gray tones on the reference layer would affect the auto-color feature. Results were meh.
Created using Clip Studio Paint Pro on a Microsoft Surface Pro 4.