.vs-progress--indeterminate
  position: absolute;
  width: 0%;
  height: 100%;
  left: -100%;
  top: 0px;
  border-radius: 2px;
  animation: indeterminate 1.200s ease infinite;
  border-radius: 20px;

@keyframes indeterminate {
    0% {
      width: 30%;
      left: -40%;
    }
    60% {
      left: 100%;
      width:100%;
    }
    100% {
      left: 100%;
      width:0%;
    }
}

.vs-progress--background
  width: 100%;
  border-radius: 18px;
  background-color: rgba(0,0,0,.06)
  z-index: 50;
  position: relative;
  display: inline-block;
  overflow: hidden;

.vs-progress--foreground
  z-index: 100;
  height: 100%;
  border-radius: 18px;
  transition: all .5s ease;

for colorx, i in $vs-colors
  .vs-progress-{colorx}
    background: getColor(colorx, .1)
    .vs-progress--foreground,.vs-progress--indeterminate
      background: getColor(colorx, 1)