message: rename variable to avoid further confusion
diff: @@ -470,11 +470,11 @@ html.dark .btd-loaded {
  * Dark mode styles
  */
  - --background: #15202b;
  + --emoji-picker-background: #15202b;
  & .emoji-mart-dark {
  color: #fff;
  border-color: #555453;
  - background-color: var(--background);
  + background-color: var(--emoji-picker-background);
  }
  & .emoji-mart-dark .emoji-mart-bar {
  @@ -496,13 +496,13 @@ html.dark .btd-loaded {
  }
  & .emoji-mart-dark .emoji-mart-category-label span {
  - background-color: var(--background);
  + background-color: var(--emoji-picker-background);
  color: #fff;
  }
  & .emoji-mart-dark .emoji-mart-skin-swatches {
  border-color: #555453;
  - background-color: var(--background);
  + background-color: var(--emoji-picker-background);
  }
  & .emoji-mart-dark .emoji-mart-anchor:hover,
  