on my quest to get them all, I have completed the penny frames, and will "mess" with the line accordingly. I consider the official penny lineup to be: xmetal/ruby titanium/vr28 (PV) titanium/ice (PI) copper/vr28 polished/black (PB) And since the serial indicates the lens for PV, PI, & PB I am gonna leave those stock. the copper frame however, being PC for penny/copper gave me the liberty of changing the lens so g30 blue iridiums gave them a little splash of different color. the XM does also leave me a lot of liberty with lens choice and i am leaning towards Ruby as the lens of choice not only because it goes good with xmetal but it rounds out the colors in the set nicely. So with that said, let me know what you think should go in the xmetal frame.