Hello,
You have compression enabled so I can't give you an exact location but this is the CSS generating those backgrounds/styling parameters.
.label-info, .badge-info {
background-color: #3a87ad;
}
.badge {
border-radius: 9px;
padding: 1px 9px 2px;
}
.label, .badge {
background-color: #999999;
color: #ffffff;
font-size: 11.844px;
font-weight: bold;
line-height: 14px;
text-shadow: 0 -1px 0 rgba(0, 0, 0, 0.25);
vertical-align: baseline;
white-space: nowrap;
}
You can overwrite any of those values in the custom.css file with !important or change them manually. They are most likely in the bootstrap or com_content.css files. I would also suggest using Firebug to help you isolate things like this in the future.