Can I make paint drip waaay down the canvas?

[Greenlaw]

That's pretty cool!

[NealF]

What do you mean by mutli colors? Do you have an example you could show or link to?

Not really. Just thinking of possibilities. Maybe as if the brush was loaded with two different colors.
Just thinking out loud.

[hayasidist]

And if possible, multi colors.

What I've done in the past is to have a mid grey object x808080 (with small variations for light and shade if needed usually in the range A0A0A0 -- 606060) and then have a colour image that I mask over that with blend mode overlay -- both can be animated. The stars from the wand in this https://youtu.be/iN-tXtQi-Yg?t=20 (time 0:19 to 0:28 approx.) were done that way: grey particles as a mask for a shape filled with a rainbow gradient. Is that the sort of thing you wanted?

[NealF]

What a great effect. Not what I was thinking but definitely something useful.

Thanks.