NoSquint {web link} NoSquint allows you to adjust the text-only and full-page (both text and images) zoom levels as well as color settings both globally (for all sites) and per site.

Hi FredMcD,

Thank you for your feedback. I have already used this add-on. But in this add-on, there is just few selection of different colors that are on the palate under colors tab in Background check-box. Is there any way, that i can use my own hexa color value in the background colors? Or, is there any way around, i can change background color programmatically when a certain web page loads. I also tried config manager but in that can i have to go to about:config that change the background color hexa value every time for different pages.

You can modify the extensions.nosquint.colorBackground pref on the about:config page to set your preferred background color. Open about:config and search for extensions.nosquint.*

There are many colors available. Any other questions should by made at the support site. Start here; https://urandom.ca/nosquint/help.php

Maybe try one of these:

• https://addons.mozilla.org/firefox/addon/color-transform/
• https://addons.mozilla.org/firefox/addon/color-that-site/

Or if you don't mind writing style rules, you could use the Stylish extension or a userContent.css file.

One of the complexities is that you may be seeing primarily the background color of the body element, or it could be one of many other elements in the page, so putting together your own rules can be a little time consuming. If you find the research fun, maybe that's not a bad thing. ;-)

Hi jscher2000,

Thanks for reply. I also find another add-on named "Color-Toggle". It seems better comparatively to resolve my problem while opening of different web pages where i want to change the background color as per user requirement. Meanwhile, It will be great if we still can store our color Hexa value in the background colors selection panel. Likewise, we can provide our own hexa value in the "Color-Toggle" add-on which than replace the background as per Hexa value of the color. But i want to store this value permanently so that this color will always available in the color selection. :)

Hi cor-el,

I think rather to do so, if we simply do the same but for the browser.display.background_color in the about:config manager ad change its value as well. But i don't want to do it again and again using this way. Is there any other solution? Thank you.

You can set an initial value via a user.js file in the Firefox profile folder.

The user.js file is read each time Firefox is started and initializes preferences to the value specified in this file, so preferences set via user.js can only be changed temporarily for the current session.

There are websites like these where you can easily test colors.

• http://www.workwithcolor.com/color-converter-01.htm
• http://www.ficml.org/jemimap/style/color/wheel.html

Hi cor-el,

Yeah, it works fine for the selection of colors and using in user.js file. While, i also tried "Roomy Bookmarks Toolbar" add-on. it solved the problem. I simply change the look and feel of bookmarked pages as i want including background colors. Thank you. :)