SKY UX uses the Bootstrap conventions for labels to convey status, but it only uses four of the Bootstrap classes.
The success label indicates a good status such as the completion of a process.
<span class="label label-success">Success</span>
The info label indicates a neutral status. It can highlight information that does not have good or bad implications.
<span class="label label-info">Info</span>
The warning label indicates that something may be wrong and that users should take a deeper look.
<span class="label label-warning">Warning</span>
The danger label indicates that something is very wrong and that users should take action.
<span class="label label-danger">Danger</span>