Question about MIG Production German Filters

Anyone have any experience with them? I think the German set is the only one released so far. How do they work? They are hard to find, but Mission Models and RJ Enterprises has them.

Guess no one here’s tried them.

I gotta ask though, why not just mix your own?

I have some that I’m going to use on my first armor model (In panzer grey). I figured I’d try the “out of box” filter instead of experimenting too much on my own and screwing up my model. If they work I’ll match the color and consistency myself for later projects instead of forking over the $. I’ll let you know.