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.