the widget title backgrounds are done with this image:
/wp-content/themes/redbel/images/sidebar.png
(a bit complex because it is used in several styles with different background positions)
and these styles:
for the top one in a sidebar:
.side-title-first {
margin-left:-40px;
margin-right:-40px;
background:url(images/sidebar.png) left top no-repeat;
height:41px;
padding:17px 0 0 35px;
}
and for the others in a sidebar:
.side-title {
margin-left:-40px;
margin-right:-40px;
background:url(images/sidebar.png) left -66px no-repeat;
height:41px;
padding:17px 0 0 35px;
}
to make any new widget specific title backgrounds, you could use the widget css ids, which are #text-4
for the top widget, and #text-3
for the second one (these might change if you move or change the widgets)
create a new background image for each of the widgets (I personally would use the sidebar.png as a template, keep the arrangement and size, and only change the minimal neccesary – different part for the two teams).
example:
#text-4 .site-title-first { background-image: url(images/sidebar-worksop.png); }
#text-3 .site-title { background-image: url(images/sidebar-chorley.png); }