Change Firefox Background Color. It inverts the colors and background images only (inverting colors will not destroy the page design like in CSS or JavaScript methods). Make sure you have selected 'Always' in the option where it says, 'Override the colors specified by the.
You can easily change your Firefox theme by using one of the default options or by downloading a new one. In a few simple steps you can change the look of your Mozilla Firefox background to almost any color, design or image you can imagine. TextAndBackgroundColorChanger is a Firefox add-on using which you can change the text and background colors of any tab with just a few clicks.
How to change the background color of the window you get when you open up a new tab.
It will show you three options - Text color, Background color, and Reset.
Steps and information about changing a web pages background, text, and link color using CSS and the HTML body tag. Themes can alter your background and toolbar colors when browsing in Firefox and personalize your experience. You can download new themes in the add-ons menu in Firefox.