Quickstyle is a Safari extension to change the appearance of any web page by adding your own CSS rules to it. Quickstyle features a convenient "selector helper" that eases the task of finding the right CSS selector for the rule you want to create, and a built-in stylesheet editor so you can create and edit your rules right on the page. It's a lot easier and faster than using Safari's Web Inspector and editing an external User CSS file.
Quickstyle also has keyboard shortcuts to quickly apply your favorite font to an element or set of elements, or to change its font size, without even opening the style editor. You can use these abilities of Quickstyle even if you don't know anything about CSS.
What is new in this release:
More bug fixes, and added back the high-contrast colors feature from Rightsizer (click-and-keypress shortcut "C").
What is new in version 1.2.20:
Added a close button to the style editor. The editor will no longer close itself when you click outside it. You can still press Esc to close it, too.
What is new in version 1.2.17:
This version fixes a status bar issue the previous version introduced in Safari 8.0.8.
What is new in version 1.2.13:
Added a setting called 0 zoom level. If you are letting Quickstyle take over the +/-/0 keys to control whole page zoom, this new setting specifies the zoom level that will be applied when you type 0.