I have (unofficially) upgraded this style to 3.0.7 PL1 if anyone's interested in using it.
I've called it "SturTech unofficial" in the style packaging so it is clear that it is not the official version.
Download SturTech 1.0.2 unofficial for phpBB 3.0.7 PL1
It was just a coincidence that the next version was 1.0.2 btw.
Billstur (or anyone else), feel free to use this for your own purposes, since it isn't official. I merely made the changes from 3.0.5 to 3.0.7 PL1, that's all.