I want a brush with strong "streaks" of varied color within each stroke.
I'm using an "artists oils" brush (variant of the "wet oily brush"), with the variability of Hue, Saturation, and Value set all the way up at 50%. And yet I'm not getting my desired variability/streakiness of strokes. Actually, I'm not getting any varibility at all.
But I'm getting quite strong striping when I dual-load the brush in the mixer, so I know that that kind of brush DOES support variability. So what am I not doing?