You can customize the colors, title, and the number of reviews shown on your Reviews widget.
To edit the Reviews widget:
Login to the dashboard.
Click "Reviews" on the left hand side.
Click on the "Widgets" tab, then click "Create Widget".
Edit the title of the widget, colors, and the number of reviews to show.
Click "Create Widget".
Copy the code and embed it onto your site.
The Reviews widget will show all 4-5 star reviews that pull into the dashboard under "Reviews".