How to Change the Color of Signature Text in Thunderbird
The open-source Thunderbird email client displays signatures in grey by default. If you would like the program to use a different color, you can create a special Cascading Style Sheet file that will override Thunderbird's default display settings. You can change the color of both the signature text and the signature links in just a few steps.
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Instructions
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Creating the Chrome Directory
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1
Open your Windows Start Menu and type "%APPDATA%" in the search box. Press Enter to open the "Application Data/Roaming" folder of Windows.
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2
Double-click on the "Thunderbird" folder. Then open the "Profiles" folder. Finally, double-click on the folder named after your Thunderbird profile name.
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3
Create a new directory in your profile name folder by clicking on the "New folder" button at the top of the window. Then click on the new folder and name it "chrome." You will use this folder to save the CSS file that will change the way Thunderbird displays email signatures.
Creating the userContent.css File
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4
Launch the Notepad program by clicking on its shortcut in the "Accessories" folder of your Windows Start Menu.
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5
Copy and paste the following code in Notepad:
.moz-txt-sig, .moz-signature {
color: blue !important;
}
.moz-txt-sig > a, .moz-signature > a {
color: red !important;
}
In this example, Thunderbird will display signature text in blue and signature links in red. Replace the colors in this example with the colors you want Thunderbird to use.
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6
Press the CTRL and S keys simultaneously on your keyboard to save the file. Save it in the "chrome" directory that you created earlier, and name the file "userContent.css." Thunderbird will now use your new color settings when displaying email signatures.
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