after a test fitting I settled on the transparent one, and if I may say so it looks beautiful.
Here is the Alphacool back plate
that I got, it almost makes me sad to modify such a nice back plate:
I removed the paint and laser etching with sandpaper and that revealed the nice aluminium surface that you see here (I finished it up with finer grit paper to get a smoother finish). I also added another hole for fitting to my particular card:
and here is the finished product, I really like the end result of it: