All I'm asking is an option to dark mode. Not black mode. Just #333333 would be dark enough, border as #111111, and NO white text but #d1d1d1 would be as white as I can read.
Please? ;)

(I had to re-install as temp-addon in order to have my style of "choose_page.css" applied) ;) (that's the best I could do because it keeps hiding whenever I click elsewhere.... btw, that's one thing we should be able to toggle in/out as we want so we do not have to re-click in the tab for it to re-show again, and again, and dumb re-clicked etc for what? It would be handy to have it remain on-top until we toggle it out. Here's my somewhat screen-shot/picture anyway https://imgur.com/a/R3DHj9U)

And here's the modified "choose_page.css"

body {
background-color: #333333;
}

.menu {
}
.menu-item {
display: inline-block;
text-align: center;
cursor: pointer;
padding: 7px;
color: #d1d1d1;
border: solid 1px #111111;
border-radius: 4px;
box-sizing: border-box;
margin: 0 2px;
line-height: 0;
background-color: #333333;
}
.menu-item:hover {
background-color: #222222;
border-color: #111111;
}
.menu-item:focus {
outline: thin dotted;
outline-offset: -2px;
}

edit,
Thank you for the new dark mode :)