Looks like two different attempts could be testing designs.

I have no idea, but I have some supposition: no it won't work.

Like others have said warships used to do something similar.

The naive idea is a WWII concept: that the hard lines make it more difficult to see your heading from a distance.

The problem is drones don't "see" the way people do.

I remember when facial recognition technology began to be mass deployed, it was possible to trick those algorithms with special makeup. The idea of this camouflage is to trick ai drones in the same way. But it will not work with modern ai technologies, or if drone uses other targeting system like thermal cameras, or if drone simply being operated by person.

It makes it harder to see the edges and so can't determine the objects shape, and when moving potentially how fast or in which precise direction it is moving in.

LIDAR on the other hand doesn't care for dazzle paint.