Wow... looks just like my exhaust pipes between the cat and muffler that I painted black using high temp spray paint. Are you sure they used powder coat?
Is the tip tack welded? I'm trying to find the weld from the first 2 pics but only see the bolt on top. Maybe the shop you brought it to welded the adapter but not the tip.
If you're going for a black theme, go a step further and stealth the pipes by adding turndowns after the muffler.
