Z 5 z 5 hwěžkow pohódnoćeny

wot eroock dnja Okt. 7, 2019 · trajny wotkaz

Looks nice. For anyone wondering why the background in emails did not change to dark, this has to be done manually via following setting in Thunderbird:
Tools : Options : Display : Colors
(make sure to set "Override the colors..." to "Always")