Yes, I remember testing this type of brushes back then and really struggled with the symptom that the color gets far different every time I colorpick its strokes. Use alpha channel in brush tips, or add an overlay tip - #94 by acc4 And it’s not a good thing. I really dislike the idea of making the brush ‘engine’ easily create happy accidents, because the result should come out in the expected way. That’s the whole point of having a tool, which is to help visualize what people have in mind.
I’m not sure I understood the normalization stuffs, but I hope I don’t have to deal with those problems with Krita 5. 