message: fix style changes after merging in develop
diff: @@ -30,6 +30,7 @@ $focus-brightness: 125%;
  $warning-color: #ff0064;
  // background colour for warnings
  $warning-bg-color: #DF2A8B;
  +$info-bg-color: #2A9EDF;
  $mention-user-pill-bg-color: #ff0064;
  $other-user-pill-bg-color: rgba(0, 0, 0, 0.1);
  @@ -184,6 +185,10 @@ $progressbar-color: #000;
  @define-mixin mx_DialogButton_hover {
  }
  +@define-mixin mx_DialogButton_danger {
  + background-color: $warning-color;
  +}
  +
  @define-mixin mx_DialogButton_small {
  @mixin mx_DialogButton;
  font-size: 15px;
  