My Stainless Magma sits on a SS Panzer cause I think they just look like they were made for each other. But if I was going to do a Mgma on a VW, I`d go with a black Mag on top of a Black k-box, would look very good. Or any black box for that matter, really.
If you find just the right size of gasket to put into the channel at the top of the AFC ring it will hardly leak at all, if you mind how you fill it, make sure the open holes are horizontal as you tilt it back slightly, it will NEVER leak. I have found that .3 ohms with 26 gauge is my perfect vape on it, it will get VERY hot if you push it lower. OH, IMHO, it does`nt like VG heavy juices due to the vertical climb of the wicks, but 50-50 does good.
Have fun.