Examples of the classic lateral inhibition effect pop up every so often in the real world. In fact on my macbook laptop you can actually get this effect quite clearly by looking at the keyboard (black keys against the aluminum grid). I happened to being looking into some online X-mas shopping and noticed Fjällräven has a plaid shirt that induces a very strong effect as seen here, the black dots popping in & out when you saccade are kind of like reverse christmas lights twinkling! Happy Holidays! God Jul!