// Buttons
.colorize-button(@color, @border-color) {
  background: @color;
  border-color: @border-color;

  &:hover,
  &:focus,
  &:active,
  &.active {
    background: darken(@color, 15%, 'relative');
    border-color: darken(@border-color, 15%, 'relative');
  }
}

.colorize-ghost-button(@color) {
  border-color: @color;
  color: @color;

  &:hover,
  &:focus,
  &:active,
  &.active {
    border-color: darken(@color, 15%, 'relative');
    color: darken(@color, 15%, 'relative');
  }
}

// Buttons
.colorize-button(@color, @border-color) {
  background: @color;
  border-color: @border-color;

  &:hover,
  &:focus,
  &:active,
  &.active {
    background: darken(@color, 15%, 'relative');
    border-color: darken(@border-color, 15%, 'relative');
  }
}

.colorize-ghost-button(@color) {
  border-color: @color;
  color: @color;

  &:hover,
  &:focus,
  &:active,
  &.active {
    border-color: @color;
    background-color: @color;
    color: white;
  }
}

Change hover style of Topic button
Change hover style of Topic button
