If you want to limit the size of the context bar, you can replace the labels with icons showing "tool tips", modifying this line in site-master-kelp.adp:
<li><a href="@context.url@">@context.label@</a> »</li>
with something like this:
<li><a href="@context.url@" title="@context.label@"><img border=0 src="/resources/folder.gif" class="img-header"></a> »</li>
A demo (with a slightly different version) is still running here:
http://samoa.sii.it
email: dotlrn@test.sii.it
password: 1