GitHub night mode with reversed colors

Blindlingly white backgrounds at night? No problem, tiny and futureproof.

K instalaci tototo skriptu si budete muset nainstalovat rozšíření jako Tampermonkey, Greasemonkey nebo Violentmonkey.

You will need to install an extension such as Tampermonkey to install this script.

K instalaci tohoto skriptu si budete muset nainstalovat rozšíření jako Tampermonkey nebo Violentmonkey.

K instalaci tohoto skriptu si budete muset nainstalovat rozšíření jako Tampermonkey nebo Userscripts.

You will need to install an extension such as Tampermonkey to install this script.

K instalaci tohoto skriptu si budete muset nainstalovat manažer uživatelských skriptů.

(Už mám manažer uživatelských skriptů, nechte mě ho nainstalovat!)

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

(Už mám manažer uživatelských stylů, nechte mě ho nainstalovat!)

// ==UserScript==
// @name        GitHub night mode with reversed colors
// @description Blindlingly white backgrounds at night? No problem, tiny and futureproof.
// @namespace   https://greasyfork.org/users/4813-swyter
// @match       *://github.com/*
// @version     3
// @grant       GM_addStyle
// @run-at      document-start
// ==/UserScript==

GM_addStyle
(`
  html
  {
    background-color: white;
    color: black;
    filter: contrast(110%) invert(85%) hue-rotate(90deg);
  }

  img
  {
    filter: invert(125%) hue-rotate(-90deg);
  }

  /* swy: the header is now dark; so more hacks */

  div.header[role=banner]
  {
    filter: invert(85%);
    z-index: 40000;
  }

  div.header[role=banner] img
  {
    filter: hue-rotate(265deg);
  }

  div.header[role=banner] div.dropdown-menu
  {
    filter: invert(85%);
  }
`)

/* swy: fix the weird left cutoff edge in the original page's logo */
document.addEventListener('DOMContentLoaded', function()
{
  if ((logo = document.querySelector("a.header-logo-invertocat svg.octicon-mark-github")))
    logo.viewBox.baseVal.height = 17; /* swy: was 16 */
});