bootstrap input :required box-shadow override

Using Bootstap 2

I am looking for a way to override the red box-shadow on text inputs that have the required attribute set. The blue glow is nice on the non-required inputs but red seems too extreme.

I found the blue focus shadow (below) but I can't find the pseudo tag :required at all.

textarea:focus,
input[type="text"]:focus,  /*  HERE  */
input[type="password"]:focus,
input[type="datetime"]:focus,
input[type="datetime-local"]:focus,
input[type="date"]:focus,
input[type="month"]:focus,
input[type="time"]:focus,
input[type="week"]:focus,
input[type="number"]:focus,
input[type="email"]:focus,
input[type="url"]:focus,
input[type="search"]:focus,
input[type="tel"]:focus,
input[type="color"]:focus,
.uneditable-input:focus {
  border-color: rgba(82, 168, 236, 0.8);
  outline: 0;
  outline: thin dotted \9;
  /* IE6-9 */

  -webkit-box-shadow: inset 0 1px 1px rgba(0, 0, 0, 0.075), 0 0 8px rgba(82, 168, 236, 0.6);
     -moz-box-shadow: inset 0 1px 1px rgba(0, 0, 0, 0.075), 0 0 8px rgba(82, 168, 236, 0.6);
          box-shadow: inset 0 1px 1px rgba(0, 0, 0, 0.075), 0 0 8px rgba(82, 168, 236, 0.6);
}