Here is my full Manifest.json code here, hope this helps someone else with their theme. Is there a way to set the Scrollbar colors (background, thumb, and borders) in 'manifest.json'? The scroll bar color automatically goes Light or Dark again depending on the 'sidebar_text' value. Is there a value I could use to directly color the Quick Filter Bar separate from Frame in 'manifest.json'? The Quick Filter Bar (under toolbar) color is directly linked to the theme Frame color ('frame'), and the only way I was able to give the Frame/Tab Bar the Firefox-esque full black color ('rgb(0, 0, 0)') while having the Quick Filter Bar be a different shade ('rgb(35, 35, 35)') that looks good under the Toolbar, was to use a Header image that is completely black and set the Frame color to what I want for the Quick Filter Bar. I can change this with '_color = #333333' in the SETTINGS/CONFIG EDITOR, however is there a way to achieve this in my 'manifest.json' file for the theme? The default new window as shown above is the default TB dark mode blueish black. Is there any way to force the 'zebra striping' in the THREAD area with a light text theme WITHOUT CSS in userChrome? (I want to keep everything in the theme no userChrome code if possible).

If I set a light text value, ex 'rgb(255, 255, 255)', the striping will disappear, regardless of the darkness of the rest of the theme. I know this because if I set my 'sidebar_text' to a dark value, ex 'rgb(0, 0, 0)', or if I do not specify that field at all, the striping will appear as it does in the default TB Light theme.

Zebra striping in the THREAD (messages) area seems to only be possible with a light theme/dark text. Most of what I wanted to accomplish is done, but I could still use some help on tweaking a few design elements: My goal here was to turn the default dark mode from the blue-black (why is everyone doing blue black?) to a real black everywhere possible. here is my first theme for TB!īLVCKBRD BLVCKBRD Theme on Thunderbird 91, Mac OSX 10.14 Mojave After finishing my dark theme for Firefox, and not finding a suitable dark theme anywhere for Thunderbird, and after countless hours of trial and error with coding.

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