Design resources are useful for any effect on an image or photograph to either modify or order some digital retouching. Designers apply it a lot and everything is always helpful, texture, brushes, etc. This time Jan have a selection of brushes Bokeh effect. Is a term used to say of the photograph or image is to place a blur, we can see the blur circles can be any color.
They may look like a rounded spot though in some cases are few defined, is an effect that is produced by a camera but can also be used as a resource to be able to apply them to your images.