I've downloaded the latest version and unpacked them. I got many .info files but, in order to create a proper AROS icon set, I need to integrate them in AROS sources and compile the whole thing. There is a problem, however: in AROS sources, icons must be plain PNG images, which eventually become .info files during compilation. I must do this passage, because I haven't found yet a way to correctly edit def_#? files into AROS, and associate the icons after compilation would mean re-doing the same work every time I update AROS system files. Which is odd.
I renamed all .info files to .png changing names where needed, to meet Linux case sensitive requirements. I compiled the whole thing and... tah dah! I've got a "nightly build" with Ken's Icons (and some VmwAROS custom components like the boot screen and the "v41" muimaster.library: there's also a screenshot). However it is only a half success, since the active status has gone, and I don't know exactly why. I hope someone in the AROS devs department will help me figuring this out.
In the meanwhile, the best news is that I contacted Ken Lester, icons' author, and he not-only allowed me to use his icons, but kindly decided to contribute in the artistry side, by creating missing icons and complete the theme in order to fulfit VmwAROS needs. I can only thank him publicly for everything and hope that this effort will make our users happier.