change color colindex bootstrap code example
Example 1: bootstrap color a div
use something like :
<div class="container alert alert-success">
<div class="row">
<div class="col">I'm your content inside the grid!</div>
</div>
</div>
Example 2: change bootstrap background color
<style type="text/css">
body { background: navy !important; } /* Adding !important forces the browser to overwrite the default style applied by Bootstrap */
</style>