Assegnate 4 su 5 stelle

Seems a graet add-on, but i cant't read anything in thunderbird's built in darkmode, the font-colordoesn't get inverted.

Questa recensione riguarda una versione precedente (2.0) del componente aggiuntivo. 

Thank you for the review! I believe you just filed this issue as well: https://github.com/tdulcet/Thunderbird-Send/issues/12. The regular dark mode should work as expected, but high contrast mode is not yet supported by the library this add-on uses for the CSS.