Represent now another circle under the first circle’s layer. The color’s code is
818181.

Then open a new file having
4x4 px and
72 dpi. Use the next instrument on it

to insert
4 pixels diagonally on a transparent background.

Select now
Edit \ Define pattern… and save the picture! Get back to our actual file and apply the next adjustments for the circle.
Blending Options:


Choose the picture in the
Pattern option.

And one more circle represented with the usual tool

. Its color’s code is
112840.