This is a PrisonPC-branded theme for prayer, a minimalist webmail server (i.e. HTTP to IMAP/SMTP bridge).
It is based on the upstream theme "cam" (for Cambridge).
It also removes some elements that PrisonPC didn't want. They were originally hidden with CSS display: none. I think now they're outright removed from the HTML templates.
The screenshots don't show it, but there is also an orange hover color for tabs, with a fade in/out CSS animation.
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