[Theme: InterStellar] Content Opacity

I am currently using the InterStellar theme downloaded here http://www.ufothemes.com/themes/interstellar/ for my company’s website. http://www.theshuttermonkeys.com. I am not wonderful will CSS but I know enough to get stuff done. When I use the following code : `div#wrap-inside {opacity:0.6;
filter:alpha(opacity=60);
font-family: Lucida Sans Unicode;
border-top: none;
}`

I get the general effect that I want, the only problem is I want to keep the div#featured opacity free so the images look how they are supposed to. I have tried everything to get this to work but for some reason it won’t. I know that the wrap-inside div is a parent to the featured div and any way I have tried to make this work it won’t. Using RGBA is also not working for me. Any ideas how to make those images opaque and leave everything else transparent? I want the content background color to be white or as close to white as humanly possible.