Dark theme for inbox, trying to be as simple as possible. Designed for Chrome & Violentmonkey.

inbox-dark.user.js

// ==UserScript==
// @name         Dark inbox using chrome filters
// @include      https://inbox.google.com/*
// @grant        GM_addStyle
// @run-at       document-start
// @version      2018.04.09
// @description  Robobenklein got tired of Google Inbox without a dark theme.
// ==/UserScript==

GM_addStyle ( `
body {
  background-color: black;
}
#Nr {
  filter: invert(100%) hue-rotate(180deg) contrast(1.1) brightness(120%);
  background-color: white;
}
#Nr img {
  filter: invert(100%) hue-rotate(180deg);
}
#Nr img:not([class]) {
  filter: none;
}
#fv {
  filter: invert(100%) hue-rotate(180deg);
}
#fv img.io {
  filter: invert(100%) hue-rotate(180deg);
}
` );

~2018-04-09.png