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How to make an edit to the default dark theme?

  • 1 reply
  • 1 has this problem
  • 9 views
  • Last reply by sfhowes

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I want to be able to edit something within the default "dark" theme within Thunderbird. I absolutely love this theme and there aren't a lot of themes to pick from anyway ever since they changed away from the old themes, eliminating everything that was out there.

I can't seem to find the information for the original theme anyway. Given, I know once I update thunderbird again, I'll likely lose my changes. If I knew how to make my own theme to fix that I would, but at the moment I lack that knowledge and it feels like a simple single change seems faster than learning how to create a whole new theme.

Everything in the theme is great except for one thing. The dates in the lightning calendar blend in too much when it comes to which ones are busy and which ones are free (no events). The only thing telling the two apart is regular or bold (the font), but the difference is quite minimal as you can see in the attached image I provided. I just want to add color to that as well by say...making the bold/busy dates a shade of orange or something so that they pop out more.

I want to be able to edit something within the default "dark" theme within Thunderbird. I absolutely love this theme and there aren't a lot of themes to pick from anyway ever since they changed away from the old themes, eliminating everything that was out there. I can't seem to find the information for the original theme anyway. Given, I know once I update thunderbird again, I'll likely lose my changes. If I knew how to make my own theme to fix that I would, but at the moment I lack that knowledge and it feels like a simple single change seems faster than learning how to create a whole new theme. Everything in the theme is great except for one thing. The dates in the lightning calendar blend in too much when it comes to which ones are busy and which ones are free (no events). The only thing telling the two apart is regular or bold (the font), but the difference is quite minimal as you can see in the attached image I provided. I just want to add color to that as well by say...making the bold/busy dates a shade of orange or something so that they pop out more.
Attached screenshots

All Replies (2)

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I found this topic and added this code to my userChrome.css (see picture):

.minimonth-day[busy] {
  font-weight: bold !important;
  color: orange !important;
  background-color: lightgrey !important;
}

This may at least point you in the right direction.

Toggle toolkit.legacyUserProfileCustomizations.stylesheets to true in Config. editor.

Similar topic: https://support.mozilla.org/en-US/questions/1304213

Modified by sfhowes

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sfhowes said

I found this topic and added this code to my userChrome.css (see picture):
.minimonth-day[busy] {
  font-weight: bold !important;
  color: orange !important;
  background-color: lightgrey !important;
}

This may at least point you in the right direction.

OMG YES! Thank you! I created the folder and file and added everything but the background color line. *Poof*! That was exactly what I needed. The native Dark theme is officially perfect. That has been driving me insane...my mind feels at rest suddenly :D

Dictionary->A's-> "Awesome" == sfhowes