You can use the .link-* classes to colorize links. Unlike the .text-* classes, these classes have a :hover and :focus state.

<a href="#" class="link-primary">Primary link</a>
<a href="#" class="link-secondary">Secondary link</a>
<a href="#" class="link-success">Success link</a>
<a href="#" class="link-danger">Danger link</a>
<a href="#" class="link-warning">Warning link</a>
<a href="#" class="link-info">Info link</a>
<a href="#" class="link-light">Light link</a>
<a href="#" class="link-dark">Dark link</a>

Some of the link styles use a relatively light foreground color, and should only be used on a dark background in order to have sufficient contrast.