Using shortcode will give you the option to set both the background color and text color.
Here is the code: [framed_box bgColor="#99C68E" textColor="#205400"]content[/framed_box]
The shortcode will also allow you to round the framed box [framed_box bgColor="#8bb381" textColor="#5e7d7e" rounded="true"]
There are a lot of other things you can do by CSS. Change border(s) color(s) and width(s), box shadows, inner shadows, gradients, background images, ect...
On the Styled Boxes Shortcode page, there aren't any parameters like there are on the other shortcode pages. Could you add those so we can see all the options available for the styled boxes?
Thanks for pointing that out. We will soon revamp the demo. However we have been concertrating on the latest update and forum lately, but our attention will as things come to a rest go o the demo theme.