Windows 10 reached EOS (end of support) on October 14, 2025. If you are on Windows 10, see this article.

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More
Archived

Mismatched message pane backgrounds - how to fix?

guttermonk

I was able to change some of my message pane background by adding the following to the userContent.css file:

/* Thunderbird userContent.css */

@-moz-document url-prefix("imap:"),url-prefix("mailbox:"),url-prefix("news:") {

 body {
   background-color: #404552 !important;
 }

} @-moz-document url-prefix("about:blank?compose") {

 body {
   background-color: #404552 !important;
 }

}

I also tried adding the following to my userChrome.css file: /* Message pane */

  1. msgHeaderView {
 background-color: #404552 !important;

}

  1. messagePane {
 background-color: #404552 !important;

}

Why do I still get these two dark gray areas (see attached)? What css do I need to add to get them to be the lighter grey?

I was able to change some of my message pane background by adding the following to the userContent.css file: /* Thunderbird userContent.css */ @-moz-document url-prefix("imap:"),url-prefix("mailbox:"),url-prefix("news:") { body { background-color: #404552 !important; } } @-moz-document url-prefix("about:blank?compose") { body { background-color: #404552 !important; } } I also tried adding the following to my userChrome.css file: /* Message pane */ #msgHeaderView { background-color: #404552 !important; } #messagePane { background-color: #404552 !important; } Why do I still get these two dark gray areas (see attached)? What css do I need to add to get them to be the lighter grey?
Attached screenshots

All Replies (1)

You probably want your senders to stop specifying a background colour!