Thank you for your feedback! I will create a new topic here and assign you ownership of it in the feature requests category regarding the dark mode 
. Please use 1 topic per feature request, bug, or feedback point. This allows me to easier manage various requests.
I think you read both categories? The arrow points to number of reactions 
Could you please check again if there is a clear difference in contrast and to make sure there is not a bug? Unread topics should clearly be in black letters, not greyed out and also have a notification sign next to it 
It has either “new” when unread or a circle with a number if you read it already but there were new comments.
