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How to change color of column title backgrounds in message list

I-Thunderbird Customization
fhutt
fhutt

I am using Windows 11 with the latest Thunderbird 151.0.1. I have been trying to add color to the column title background in the message list using the userChrome.css with the following:

  1. sizeCol {background-color: #dcfffc !important;}
  2. recipientCol {background-color: #dcfffc !important;}
  3. subjectCol {background-color: #dcfffc !important;}
  4. dateCol {background-color: #dcfffc !important;}
  1. spamCol {background-color: #dcfffc !important;}
  2. fromCol { background-color: #dcfffc  !important;}
  3. attachmentsCol { background-color: #dcfffc  !important;}

They work except the 'from', 'attachments' and 'spam' columns title backgrounds. Can anyone see what I am doing wrong? Or is there a way to color all column title backgrounds in one line? Thanks

I am using Windows 11 with the latest Thunderbird 151.0.1. I have been trying to add color to the column title background in the message list using the userChrome.css with the following: #sizeCol {background-color: #dcfffc !important;} #recipientCol {background-color: #dcfffc !important;} #subjectCol {background-color: #dcfffc !important;} #dateCol {background-color: #dcfffc !important;} #spamCol {background-color: #dcfffc !important;} #fromCol { background-color: #dcfffc !important;} #attachmentsCol { background-color: #dcfffc !important;} They work except the 'from', 'attachments' and 'spam' columns title backgrounds. Can anyone see what I am doing wrong? Or is there a way to color all column title backgrounds in one line? Thanks

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