I found a way to test skins for Moonshell 2, but very basic. It can view the Default screen and most of the icons only. Also the launch tabs.... sorta. The video player can be viewed, but the buttons become weird. The initial setup can also be viewed properly. Also the animations. As it turns out, the M3 Sakura skin tester can also view the Moonshell 2 Skins. The discussion is here. I will post some previews. Since this was designed for M3 Sakura, a lot of stuff can't be viewed.