Settings (cog at the bottom left)/Calendar (l)/Categories (r)

Are you using Linux (Debian 12)?? There is no "cog" at bottom left. I have to "Edit->Settings". My events tab in my inbox view has not changed (see attached). Note the TPG entry. There is a dot in front of the entry. I want the entire entry to have the background colour of the calendar the event is allocated to; the same as in the calendar view. (refer to my original attachment)

Nope. Not Linux. But, then, you didn't say you were using Linux, either. Perhaps Linux doesn't have a Settings panel? If you can find it, I'd guess that the colourisation is still under Calendar/Categories.

My bad; Debian 12 was supposed to be in the initial post. I did "Edit->Settings" to get to the Calendar/Categories, but this did not work (as per my last attachment). I want the background of ALL entries (in my Events tab on my inbox page) to be the colour of the calendar it is allocated to; not just the "All Day" tasks. I'd be happy with the colour of categories as the background (like it did many years ago), but that doesn't work either.

I think that I'm probably not understanding you correctly. I understood you to mean that you wanted every entry to be the same colour. So allocating the same colour to each category would achieve that - or making everything the same category. Ah well...

Thanks for responding though.

If you are willing to use userChrome.css, put the following CSS in userChrome.css:

#today-pane-panel #agenda .agenda-listitem .agenda-listitem-details {
  margin-block: 1px;
  padding-inline: 8px;
  background-color: var(--item-backcolor);
  color: var(--item-forecolor);
}

#today-pane-panel #agenda .agenda-listitem-calendar {
  display: none !important;
}

Didn't appear to change anything. To be clear, this is not from the calendar view; It is from the my Inbox with the "Today Pane" visible.

The CSS I provided works for me. Please see the attached picture.

What is the version of your Thunderbird and what is the operating system? Mine is 128.6.0esr for Windows.

I also have 128.6.0 esr but on Debian 12. Is there anything else in your userChrome.css??

1. The CSS I provided is the only thing inside my userChrome.css. (By the way, I do not use "@namespace".)

2. Please examine the settings:

Hamburger button on the upper right corner > Help > Troubleshooting Information > please scroll down to "Legacy User Stylesheets" setion (please see attached picture) > please examine the values of "Active" and "Stylesheets".

If "Active" is not "true" or if "Stylesheets" is not "userChrome.css", then the following links might be helpful: https://www.userchrome.org/how-create-userchrome-css.html https://www.reddit.com/r/FirefoxCSS/wiki/index/tutorials/ https://www.reddit.com/r/Thunderbird/comments/16euj2l/comment/k05trp1/ (Note: Some of the above links talk about Firefox, but the idea and steps in the links can still be applied to Thunderbird to some extent.)

Hello, I have testing :

1. today-pane-panel #agenda .agenda-listitem .agenda-listitem-details {

 margin-block: 1px;
 padding-inline: 8px;
 background-color: var(--item-backcolor);
 color: var(--item-forecolor);

}

1. today-pane-panel #agenda .agenda-listitem-calendar {

 display: none !important;

}

But no coloring of the "today panel" remains in default color. I use Thunderbird 139.0.2 (64 bits) any idea?