Try the night owl theme. Its what I use.

Debian.

After a while they seem to go away if you clicked on the envelope icon but it is not immediate.

Thats a good idea. Also the upvoting from the app message area wouldnt let me upvote your comment so there is something in the app not 100% with the upvote buttons in some places.

Ok wow didnt know that. This is easier than what I was doing.

Memmy is incredible and makes using lemmy easy and fun. Cant see myself using any other app going forward. Its perfect.