Product plan: remove support for heavyweight themes

[ehume]

The problem I have is that FF 55 is shipping with the old theme in two omni.ja files. Normally I would derive my theme from the default but I don't know what code to look for. I don't even know how it is packaged.

[Frank Lion]

The problem I have is that FF 55 is shipping with the old theme in two omni.ja files. Normally I would derive my theme from the default but I don't know what code to look for. I don't even know how it is packaged.

I'm afraid I can't help you there. As you know, my Firefox themes use a different method to that of conventionally coded themes, so I haven't needed to look at that. Plus, I'm told, that they are still working OK in Firefox 56, so figured I wouldn't need to.

Maybe you could write directly to another themer who who still doing this stuff? I say that as I don't think you'll get many answers here these days.

[Lootyhoof]

The problem I have is that FF 55 is shipping with the old theme in two omni.ja files. Normally I would derive my theme from the default but I don't know what code to look for. I don't even know how it is packaged.

The omni.ja files are .zip files, but packaged a little differently. They should open fine in most zip viewers though (7zip works here). There should be two omni.ja files, one in the root folder and one in /browser. If you're looking for theme stuff, they should be here:

/browser: in omni.ja in /browser, navigate to chrome/browser/skin/classic/browser/
/global: in omni.ja in root folder (i.e. C:\Program Files\Firefox\), navigate to chrome/toolkit/skin/classic/global/
/mozapps: in omni.ja in root folder (i.e. C:\Program Files\Firefox\), navigate to chrome/toolkit/skin/classic/mozapps/

As mentioned though, these themes will be useless when Firefox 57 arrives.

As for your other question...

Especially on how to modify an old theme to work with the new Firefox

Do you mean Firefox 57+? As far as I know that's pretty much just getting a slightly more involved version of lightweight themes (see here).

If you mean for Firefox 55 (or others)...there's never been any documentation, just a case of checking what's changed in the CSS.

[ehume]

I have read that page. It is full of vague generalities. If I follow that I can put all of my themes to bed in months. I will then be stuck with Mozilla's drab and tiny default theme. As for the link to WebExtensions API, that page has way more than one needs to make themes.

I am only interested in themes that will work on FF 57+. There seems to be no guide for something that limited.

[ehume]

If anyone knows how to change the sizes of the icons and the text, please post.