Light the Stream

Add into Theme > Styles

.navbar-nav li a{
  color: #15355B !important;// (whatever color code needed)
  font-family: lato;
  font-weight: 700;
}

//header links:
#page-header .header-links ul li {
  float: left;
  border-left: 1px solid #fff;
color: #00000; // (whatever color code needed)
}