message: dark theme color adjustments
diff: // unified palette
  // try to use these colors when possible
  $bg-color: #181b21;
  -$base-color: #15171b;
  -$base-text-color: #edf3ff;
  +$base-color: #15191E;
  +$base-text-color: #ffffff;
  $header-panel-bg-color: #22262e;
  $header-panel-border-color: #000000;
  -$header-panel-text-primary-color: #a1b2d1;
  +$header-panel-text-primary-color: #B9BEC6;
  $header-panel-text-secondary-color: #c8c8cd;
  -$text-primary-color: #edf3ff;
  -$text-secondary-color: #a1b2d1;
  +$text-primary-color: #ffffff;
  +$text-secondary-color: #B9BEC6;
  $search-bg-color: #181b21;
  $search-placeholder-color: #61708b;
  $room-highlight-color: #343a46;
  @@ -35,8 +35,8 @@ $info-plinth-fg-color: #888;
  $preview-bar-bg-color: $header-panel-bg-color;
  -$tagpanel-bg-color: #15171bd1;
  -$inverted-bg-color: $tagpanel-bg-color;
  +$tagpanel-bg-color: rgba(44, 50, 56, 0.92);
  +$inverted-bg-color: $base-color;
  // used by AddressSelector
  $selected-color: $room-highlight-color;
  @@ -111,14 +111,14 @@ $header-divider-color: $header-panel-text-primary-color;
  $theme-button-bg-color: #e3e8f0;
  -$roomlist2-button-bg-color: #1A1D23; // Buttons include the filter box, explore button, and sublist buttons
  -$roomlist2-bg-color: #21262ceb;
  +$roomlist2-button-bg-color: rgba(141, 151, 165, 0.2); // Buttons include the filter box, explore button, and sublist buttons
  +$roomlist2-bg-color: rgba(33, 38, 44, 0.92);
  $roomsublist2-divider-color: $primary-fg-color;
  -$roomtile2-preview-color: #9e9e9e;
  +$roomtile2-preview-color: #A9B2BC;
  $roomtile2-default-badge-bg-color: #61708b;
  -$roomtile2-selected-bg-color: #1A1D23;
  +$roomtile2-selected-bg-color: rgba(141, 151, 165, 0.2);
  // ********************
  