Si, Fabry, sono italiano )
For Albert: cartridges could be made up of glass fyber and epoxy resin (or rosin, don't know the exact translation)
in variable quantities, however it would be much more hard and resistant of a plastic shell, and the color would be transparent, slightly opaque, ranging from light yellow to red, it depends on the thickness, using the same thickness as original shells it would be transparent and light yellow.
I don't know yet how much could it cost, it surely also depends on desired quantity but the most important thing is that it is hand madeso it requires hand work to be made and obviously it costs more than a machine.
How could you spend for such a shell?
Other comments and suggestion are appreciated, thanx