Hi Keri — I am just another user but I did figure this one out through some poking around. All the theme colors are set in the styles.css file which you can edit by going to wp-admin > appearance > editor > BresponZive Pro: Stylesheet (style.css)
It’s a little bit hit or miss to find the exact hex code for what you want to change. When you have the page open in your browser, right click on the element you want to change and choose “inspect element” or “view page source” or whatever your browser option is for this. In Chrome for example, when I right click on the hroizontal “Recent Posts” bar and inspect element, I get
<h2 class=”blogpost-wrapper-title”>Recent Post</h2>
over on my “Elements” left-side and
media=”all”
h2.blogpost-wrapper-title, .widget-head {
background: url(images/bg-stripe.png) no-repeat 100% 0px;
position: relative;
font-family: Oswald,serif;
background-color: #363636;
over on my “Styles” right-side. From there I can experiment with values using the color picker to replace background-color: #363636;
Once I settle on a color, I go back to Editor, load style.css in the editor window and do a Find (Ctrl-F) in the style.css window for “h2.blogpost-wrapper-title” and change the background color to whatever I want.
Hope that helps.