Though this is largely a javascript mod I have altered the _body_header.php in the elf_zen skin to dynamically select the blog name so it will work on alternate collections.
[codespan]<?php echo $Blog->name ?>[/codespan]

I then had to amend the [search.js] in the skin to check for "calstock' rather that equate to a specif URL
[codeblock]
//if (engine =="https://calstock.org.uk/elf.php?s=")
if (engine.includes("calstock"))[/codeblock]

Using the HTML5 figure tag I have added a css rule to the skin to remove the margin and more:

figure, figure img, figcaption {margin:0; padding:0}
figcaption{margin-top:-.45em; margin-bottom:1em;background-color:#f6ffee; padding:0.6em 1em; text-align:center; border-bottom:solid 1px green}