Damn, that is a bit complicated
Although I get wanting to improve as you go along, then fixing the past to update it. Of course, that means that I get to see different coloring styles while continuing to read it. If I even notice it, so that would be fin.
If the original first volume was black and white, I do appreciate them going back and color it in stages. It really adds in to the “Agatha slowly awakening her powers” motif that they had set up.