Toggle Mac's Grayscale Display From the Status Bar
Internet companies thrive on people's attention. The colorful interface, the urgency-inducing notification badges, are all designed to subconsciously manipulate users in spending more time on the site.
A grayscaled display helps you avoid compulsive fiddling by making distracting websites less appealing
Note: Quick Grayscale needs access to System Events and Accessibility permissions in order to work. Tested on macOS Mojave.