You can paint decorative plaster at least two options: either while it is applied to the surface, or after. In the first version, the coloring pigment is added to the plaster, stirred well and applied to the walls. You can buy paint any color in a construction store or in the market. Well, the second option is to apply a paint on top of the plaster. The main rule is to take paint on water -based, so that it is better absorbed into the wall and, accordingly, is better to hold. The paint is best applied to dry plaster. As a rule, you need to wait about three days, otherwise, after applying the paint, it can be peeled off.
Experts usually advise taking a roller or ordinary brushes for painting, but here you can simulate: if you take a roller with a shorter pile, you can create the effect of a “unlucky” wall. As a rule, troubles may occur during staining: for example, small pieces of plaster can be abandoned. So that this is not, first you need to paint textured areas, and then move on to the usual. If you apply paint a second time, then here you can already be painted as it pleases. During the process of applying paint, do not try to rush like a fire: you do everything for yourself, so you can try here.