I have used the NoSquint one for a long time. I like the ability to change the colors on individual pages. For instance, pages that I spend a lot of time on that have a huge expanse of glaring white I change to gray. “Starting with Firefox 22 the web browser is now respecting the display scaling of the operating system which may have changed how the browser UI and websites are displayed on user systems. The linked article highlights how you can change the size of fonts in the browser so that they appear larger or smaller on the…