Not read contents are confused in vertical view on cards

[tgely1]

No contrast beetwen read or not read contents cards. Background sould be highlighted instead of bolded subject or use a little small green point in left top corner.

[Agentvirtuel]

Hello

Hypothesis
Is it this subject https://forums.mozillazine.org/viewtopic.php?t=3120963 among others

[Agentvirtuel]

Hello

https://support.mozilla.org/en-US/questions/1456609
You can testing a different colors https://www.w3schools.com/colors/default.asp
And restart Thunderbird