Create graduated colors by putting varying amounts of black (or any color you choose) paint/pouring mixture into 4 cups. Add white paint/pouring mixture to 3 of them. I was going to add silver into this also but got so into the cups of paint, decided not to use it. Definitely follow your impulses of things to try or not try was you’re pouring.
Create puddles of the darkest color, then pour paint in the middle.
The swirl of blue shows why you want to stay in one place when you do it if you want a solid puddle.
The black is very thick, so it doesn’t move as quickly.