// Base class
//
// Requires one of the contextual, color modifier classes for `color` and
// `background-color`.

.badge {
  display: inline-block;
  padding: $badge-padding-y $badge-padding-x;
  font-size: $badge-font-size;
  font-weight: $badge-font-weight;
  line-height: 1;
  color: $badge-color;
  text-align: center;
  white-space: nowrap;
  vertical-align: baseline;
  @include border-radius();

  // Empty badges collapse automatically
  &:empty {
    display: none;
  }
}

// Quick fix for badges in buttons
.btn .badge {
  position: relative;
  top: -1px;
}

// Pill badges
//
// Make them extra rounded with a modifier to replace v3's badges.

.badge-pill {
  padding-right: $badge-pill-padding-x;
  padding-left: $badge-pill-padding-x;
  @include border-radius($badge-pill-border-radius);
}

// Colors
//
// Contextual variations (linked badges get darker on :hover).

@each $color, $value in $theme-colors {
  .badge-#{$color} {
    @include badge-variant($value);
  }
}

// Base class
//
// Requires one of the contextual, color modifier classes for `color` and
// `background-color`.

.badge {
  display: inline-block;
  padding: $badge-padding-y $badge-padding-x;
  font-size: $badge-font-size;
  font-weight: $badge-font-weight;
  line-height: 1;
  text-align: center;
  white-space: nowrap;
  vertical-align: baseline;
  @include border-radius();

  // Empty badges collapse automatically
  &:empty {
    display: none;
  }
}

// Quick fix for badges in buttons
.btn .badge {
  position: relative;
  top: -1px;
}

// Pill badges
//
// Make them extra rounded with a modifier to replace v3's badges.

.badge-pill {
  padding-right: $badge-pill-padding-x;
  padding-left: $badge-pill-padding-x;
  @include border-radius($badge-pill-border-radius);
}

// Colors
//
// Contextual variations (linked badges get darker on :hover).

@each $color, $value in $theme-colors {
  .badge-#{$color} {
    @include badge-variant($value);
  }
}

Remove `color` property from `badge` class
Remove `color` property from `badge` class

I suggest removing `color: #FFF` from the `badge` class, because it is
provided by the `badge-<modifier>` classes along with a
background-color, whereas there is no corresponding background-color
provided on the `badge` class itself.

Background
----------

According to the documentation:

> [badge] Requires one of the contextual, color modifier classes for `color` and
> `background-color`.

That is, color and background color should be provided by a modifier
class, rather than the badge class itself.

e.g. `<span class='badge badge-primary'>4</span>`

In general, providing a `color` property without also providing a
`background-color` should be avoided. [W3 QA tips]

In this context, this is a problem only if someone creates a `badge`
without providing a modifier. Such an omition may be difficult to trouble-shoot,
because this will most likely yield white text on a white background.

[W3 QA tips](https://www.w3.org/QA/Tips/color)
