Oh, you’re using a text so you can just manually add it in –
<h1 style="color: #fff;font-weight: 300;">It’s Time to Breathe Life into Your SEO and Online Marketing</h1>
I added some inline code to make it show up as white. You can change that if you want.
Also, HTML won’t work in the Title section of the Text widget, so you have to add this inside the Content box of the Text widget.