The viral grid posted on Reddit — which also went viral in September 2016 after it was posted on Twitter — is a bit different, featuring gray crisscrosses on a white background, with twelve ...

So when we stare at a black dot surrounded by a pattern of gray lines against a white background ... “When the white disks in a scintillating grid are reduced in size, and outlined in black ...

You can choose a relevant mode to adjust the dimming of the background of the ‘Alt + Tab’ functionality, and you can easily revert back changes by selecting the default option. Grid Background ...