add background color for a selected text in thunderbird

add background color for a selected text in thunderbird:

 --> close thunderbird.

  --> Move to your Thunderbird profiles folder.

  --> Open user.js file or prefs.js file.

  --> Just add the following line,

         
user_pref("ui.textSelectBackground", "#a52a2a");

Now open thunderbird and select any typed text, you would be able to view the background color for the selected text.....