Action painting.
I believe it is called the backdrop.
It is called a "Step and Repeat"
the colorful banca in zamboanga is called
Well, darling, that process is called painting. You take your fancy brush or your grubby finger, dip it in some colorful goop, and then smear it all over a surface to create a masterpiece. It's like finger-painting for grown-ups, but hopefully with a bit more finesse.
backdrop
The falling of cold liquid is called dripping.
The area in the background of a picture is called the background or backdrop.
The colorful, leaf-like structures of flowers are called petals.
The websites which offer theatrical backdrop rentals are called Charles Stewart, and Ken Mark Back Drops, along with a studio company called Cobalt Studios.
Mallards.
Narangi
It is called Talavera.