function colorHasAllVariants (color) {
  const keys = ['100', '200', '300', '400', '500', '600', '700', '800', '900']
  return keys.every(key => isDef(color[key]))
}
Checks whether a variant color has all keys from 100 - 900
@param {Object} color Color object on theme with all variantes
@returns {Boolean}