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What if I can alternate between both?

Edit: I've looked at it a bit more:

• I can make the black circles into "windows" that show a red circle behind a white wall.

• I can also overlay the red circle as a mask in front of the black parts, so that only the black parts make the red circle visible (like in a shader program or when masking parts of an image in a photo editor).

• Then I can also envision a red hue along the white parts of the image that follows the silhouette of the red circle.

• And then I can "deactivate" the silhouette again, so that the red parts are simply drawn on top of the black circles, with no relation to each other.

I think this is just a test to see if you have experienced a certain effect before.