Small Horizontal Line under Title Headings and change colors


I used to use the Sydney theme for one of my sites and liked how there was a small horizontal line underneath the title headings. Is there a way to add this to the headings in the Talon Pro theme?


The code from Sydney:

.panel-grid-cell .widget-title {
	position: relative;
.panel-grid-cell .widget-title:after {
    content: "";
    position: absolute;
    left: 50%;
    bottom: -5px;
    width: 50px;
    height: 1px;
    margin-left: -25px;
    background-color: #d65050;

Thanks so much!