Small thing thing that had been annoying me, the phpBB logo was on the banner for the prosilver and subsilver themes, accessible via the user control panel/board preferences.
They now have DRuG logos instead of the phpBB logo, I even went as far as locating a photoshop template to give it a subtle appearance similarity to the original phpBB logo I was replacing, in the case of prosilver.
These stock themes are mainly there as a safety net in case a module or update to phpBB doesn't have prewritten templates that suit our custom ones... but it's nice having them DRuG branded, now.