TT DeepDark | Pink Sapphire Edition

"TT DeepDark | Pink Sapphire Edition" is a complete theme add-on (derived from my original "TT DeepDark") created to transform the look and feel of Mozilla Thunderbird email client. It doesn’t add specific functionalities to the software. It focuses on providing a full GUI (Graphic User Interface) aesthetic customization by replacing colors, icons and, in some cases, by changing the spacing around UI elements, their shape and/or their position.