Paint Drip Transition

I want to do a transition where it feels like a solid background color is dripping onto another solid color and replacing it (for example red paint dripping down and quickly covering a blue background).

I figure I need to find an animated (b/w) paint dripping animation and use that as a mask, but my googling must not be very good, because I haven't turned up anything.

Does anyone have any suggestions or know where I can find something like this?

Thanks,

Chris

Google "Paint Drip Video Transition"

You get a whole bunch of results. Pond5 looks like they have a few.

Evato's Videohive has a whole bunch:

Here is one for just $4.

videohive.net/item/paint-transition-matte-hd/8491

Here is another:

videohive.net/item/paint-transition-40-p...uthor=ElegantGraphic

Thanks a lot for the great links and suggestions!