how to make mozilla firefox theme a homepage

If anyone could point me to what the modern equivalent of the browser and communicator folders in omni.ja are and where I can find some decent tutorials and documentation I would be muchly grateful. I tried some hacking about with a theme by making educated guesses as to what to do but didn’t get anywhere. I couldn’t locate chrome/browser/skin/classic/browser or chrome/browser/skin/classic/communicator in omni.ja. Type in the URL for your desired homepage.

Select Custom URLs from the drop-down menu. Under the Home section, click the box next to Homepage and new windows. Select Settings from the drop-down menu that appears. I started going through the ‘Hello World!’ tutorial here:, but that seems out of date for Firefox 40. Click the Menu icon in the top-right corner of the screen. Primarily, I would like to change the colour of the toolbar buttons like: home, history, downloads, etc. I would like to tweak the standard Firefox 40 theme a little bit – more than what the basic theme tweaker here allows: But I haven’t messed about with any Firefox development for years, so I’m very rusty on how it goes. I’m a developer familiar with most common languages and paradigms.

How to make mozilla firefox theme a homepage