There are three theme packages for Thunderbird that might apply, but all of them are outdated and need some work:
https://addons.mozilla.org/de/thunderbird/addon/3946
https://addons.mozilla.org/de/thunderbird/addon/2258 https://addons.mozilla.org/de/thunderbird/addon/9458
There are three theme packages for Thunderbird that might apply, but all of them are outdated and need some work:
https:/ /addons. mozilla. org/de/ thunderbird/ addon/3946
https:/ /addons. mozilla. org/de/ thunderbird/ addon/2258 /addons. mozilla. org/de/ thunderbird/ addon/9458
https:/