theme.css

:root {
  --body-color: #eee;
  --body-color-muted: #9b9b9b;
  --border-color: #222;
  --body-bg-color: #000 !important;
  --body-bg-color-light: #111;
  --button-color: #2980b9;
  --button-color-muted: #3498db;
  --button-text-color-hover: #fff;
  --overlay-bg-color: rgba(0, 0, 0, 0.5);
  --link-color: #3498db;
  --window-bg-color: #000;
  --window-heading-color: #6c797a;
  --date-marker-color: var(--button-color);
  --unread-marker-color: var(--button-color);
  --highlight-bg-color: var(--border-color);
  --highlight-border-color: var(--button-color);
  --upload-progressbar-color: var(--button-color);
}

::-webkit-scrollbar:hover {
  background-color: var(--body-bg-color-light);
}

::-webkit-scrollbar-thumb:vertical {
  background-color: var(--border-color);
  border-radius: 0;
}

::-webkit-scrollbar-thumb:vertical:active {
  background-color: #444;
}

body,
.input {
  background: var(--body-bg-color);
}

.input {
  border: 1px solid var(--border-color);
  color: var(--body-color);
}

a:visited {
  color: #9b59b6;
}

.logo-container {
  display: none;
}

.channel-list-item[data-type="lobby"] {
  color: var(--button-color);
}

.channel-list-item[data-type="lobby"]:hover,
.channel-list-item[data-type="lobby"].active {
  color: var(--button-color-muted);
}

.btn:active,
.btn:focus,
.input:focus {
  outline: 0;
  box-shadow: 0 0 0 1px rgba(41, 128, 185, 0.5);
}

.input:not(:disabled):focus,
.input:not(:disabled):hover {
  border-color: var(--button-color);
}

#chat button.mentions,
#chat button.menu,
#viewport .lt,
#viewport .rt,
.topic-container .save-topic span,
.password-container .reveal-password span,
#form #submit,
#form #upload {
  color: var(--body-color-muted);
}

form.message-search input {
  background: inherit;
  color: inherit;
}

form.message-search input::placeholder {
  color: var(--body-color-muted);
}

#form {
  background: inherit;
  color: var(--body-color);
  border-top: 1px solid var(--border-color);
}

.jump-to-input .input {
  color: var(--body-color);
}

::placeholder {
  color: var(--body-color-muted);
}

#chat .header {
  border-bottom: 1px solid var(--border-color);
}

#chat .userlist,
#chat .content {
  border-left: 1px solid var(--border-color);
}

#chat .userlist .count {
  background: inherit;
}

#chat .msg[data-type="monospace_block"] .text,
#chat .toggle-content,
#form #nick {
  background: var(--body-bg-color-light);
  color: var(--body-color);
}

#footer button:hover,
#footer button.active,
.channel-list-item:hover {
  background-color: var(--body-bg-color-light);
  color: var(--body-color);
}

#footer button {
  color: inherit;
}

#footer button.active,
.channel-list-item.active {
  background-color: var(--body-bg-color-light);
  color: var(--body-color);
}

#sidebar {
  color: var(--body-color-muted);
}

.channel-list-item .badge {
  background: var(--border-color);
  color: var(--body-color);
}

.channel-list-item .badge.highlight {
  background: var(--body-color);
  color: var(--border-color);
}

#chat .msg[data-type="invite"] .from:before,
#chat .msg[data-type="topic"] .from::before,
#chat .msg[data-type="mode"] .from::before,
#chat .msg[data-type="mode_channel"] .from::before,
#chat .msg[data-type="whois"] .from:before,
#chat .msg[data-type="nick"] .from:before,
#chat .msg[data-type="join"] .from:before,
#chat .msg.self[data-type="raw"] .from:before {
  color: var(--button-color);
}

code,
.irc-monospace {
  background-color: var(--border-color);
}

pre {
  background-color: #f5f5f5;
}

#context-menu {
  background: var(--body-bg-color);
  border: 1px solid var(--border-color);
}

.context-menu-item {
  color: var(--body-color-muted);
}

.context-menu-item:hover {
  background: var(--body-bg-color-light);
  color: var(--body-color);
}

#chat.colored-nicks .user.color-1 {
  color: #f7adf7;
}

#chat.colored-nicks .user.color-2 {
  color: #abf99f;
}

#chat.colored-nicks .user.color-3 {
  color: #86efdc;
}

#chat.colored-nicks .user.color-4 {
  color: #b76ee5;
}

#chat.colored-nicks .user.color-5 {
  color: #f9a4b3;
}

#chat.colored-nicks .user.color-6 {
  color: #f7999a;
}

#chat.colored-nicks .user.color-7 {
  color: #f497b9;
}

#chat.colored-nicks .user.color-8 {
  color: #f9a9d7;
}

#chat.colored-nicks .user.color-9 {
  color: #7fa2e2;
}

#chat.colored-nicks .user.color-10 {
  color: #a8b8ff;
}

#chat.colored-nicks .user.color-11 {
  color: #ad88fc;
}

#chat.colored-nicks .user.color-12 {
  color: #f4aead;
}

#chat.colored-nicks .user.color-13 {
  color: #fc71ab;
}

#chat.colored-nicks .user.color-14 {
  color: #ff72e0;
}

#chat.colored-nicks .user.color-15 {
  color: #8cb6ea;
}

#chat.colored-nicks .user.color-16 {
  color: #f9857c;
}

#chat.colored-nicks .user.color-17 {
  color: #ed9b82;
}

#chat.colored-nicks .user.color-18 {
  color: #8df484;
}

#chat.colored-nicks .user.color-19 {
  color: #ffcce3;
}

#chat.colored-nicks .user.color-20 {
  color: #efcc81;
}

#chat.colored-nicks .user.color-21 {
  color: #90a1ed;
}

#chat.colored-nicks .user.color-22 {
  color: #f4d484;
}

#chat.colored-nicks .user.color-23 {
  color: #97ea70;
}

#chat.colored-nicks .user.color-24 {
  color: #fcbbba;
}

#chat.colored-nicks .user.color-25 {
  color: #eef975;
}

#chat.colored-nicks .user.color-26 {
  color: #c7ff93;
}

#chat.colored-nicks .user.color-27 {
  color: #ffade1;
}

#chat.colored-nicks .user.color-28 {
  color: #98ecf2;
}

#chat.colored-nicks .user.color-29 {
  color: #7187f2;
}

#chat.colored-nicks .user.color-30 {
  color: #9676e2;
}

#chat.colored-nicks .user.color-31 {
  color: #f2a4eb;
}

#chat.colored-nicks .user.color-32 {
  color: #85f27d;
}

/* Increase contrast of some IRC colors */
.irc-fg2 {
  color: #0074d9;
}

.irc-fg5 {
  color: #e969a7;
}

.irc-fg12 {
  color: #50a8ff;
}

/* Darken mentions menu and active element hover */
.mentions-popup,
#context-menu,
.textcomplete-menu {
  background-color: rgba(0, 0, 0, 0.9);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.context-menu-item,
.textcomplete-item a {
  color: var(--body-color);
}

.context-menu-item.active,
.textcomplete-item:focus,
.textcomplete-item:hover,
.textcomplete-menu .active,
#chat .userlist .user.active {
  background-color: rgba(255, 255, 255, 0.1);
}