iirc, i made the base for that style. its a slight modification of "UBBT75 - Crimson" with borders enabled and a few other tweaks.
Borders is just the following code added to "Extra Properties" for the style
You can download the styles for past versions of UBB.threads in the Member Area downloads sectionhttps://www.ubbcentral.com/members/members.php
Do not be afraid to contact the forum owner directly if they have something on their site that you like, and want to also use. They usually can point you in the right direction to get you what you want, and the quickest route to take.