Thats a cool technique, Ive never seen something like that.
I do like art that is made in a way that the artist doesnt have complete control - that artist obviously had a lot of control over what he was doing, but working with water and the splattering, theres something unpredictable about that. In some ways the art creates itself. Its guided by the artist, but not completely under his control.
And something about the impermanence of the piece really appeals to me. I like that he could create something so beautiful and then also so easily destroy it.