html

<span class="status aguardando box-positioning"><i class="icon-clock-o"></i></span>

stylus

.status
  overflow hidden
  display block
  position absolute
  top 0
  left 0
  width 20px
  height 100%
  background-color #465054
  font-size 13px
  color #fff
.status.ok
  background-color #7BB303
.status.aviso
  background-color #FAEC41
  color #726903
.status.aguardando
  background-color #4D7AFF
  span
    margin-left 3px
.status.erro
  background-color #FF5C26
.status.default
  background-color #465054
  color #76888F
  span
    margin-left 3px
.status.box-positioning
  left -10px