This is an imperfectly-printed bullet/dot grid paper repeating pattern. The dots have an imperfect printed texture. The color can be changed.
This is an imperfect printed dot grid paper repeating pattern. The dots have an imperfect printed texture, made using #BorupenP.
This is a repeating Image Material layer. Just drag it into your canvas to use it.
The color can be changed by changing the layer color under the Layer Property pallette.