They are not painted because the flockage I use is already colored. But they still need to be assemled and glued one by one on the ground. The result looks like this:

The more different plant types and color you use the better the result will get. Except you want a filed with red flowers only :D
I need to figure out how to mix the colors and plants in a way that it looks realisitc but not overfilled. We will see :)