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I upgraded my PC and foolishly thought I knew all the add-ons that I used so wouldn't need to write them down!

Basically I had an add-on that I thought was called something like 'lights out' or similar.

All it did was enable you to have a little button which changed the CSS of websites with the click of a button, so that white backgrounds became grey and made the whole page dimmer.

It had various different built in themes to choose from, and there was an option called 'stay in the dark' which meant whatever page was loaded in the tab you were in would continue to use one of the anti-glare/brightness themes for night time reading etc.

It was a great little add on, but I can't seem to find it anywhere. The icon was a simple little light bulb with a drop down menu to select different themes.

Can anyone help me find the add on please!?

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up vote 2 down vote accepted

Do you mean Blackout?

If you are browsing in a dark environment, then it is very bad for your eyes to read pages with white background. This plugin helps you by turning the webpage to a dark color scheme.

  • There are some predefined color schemes built in, and you can also configure your color preferenes.
  • The "Stay in the dark" function enables you to automatically darken the page when you click on a link and the page loads.
  • Links and headers gets different color then text.
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You are a star! I guess I forgot it was an experimental add on which is probably why I couldn't find it – falter Oct 5 '09 at 8:35
Blackout hasn't been updated but you can still install it by unzipping the xpi, open install.rdf in a text editor, and replace the max version to 3.8 or something higher, then zipping it all back up, and replace .zip with .xpi. you may need to click windows explorer, tools, folder options, view, and uncheck 'hide extentions for known file types' to rename it. works a treat in firefox 3.6.10 – falter Oct 12 '10 at 21:18

Another option is to use a global theme with the Stylish firefox add-on. Check out for the various styles which are available. There are several 'dark' global styles on the site. If neither the Stylish add-on nor the Blackout add-on seem suitable, it might be worth trying out the 'Dimmer' add-on.

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