Something possessed me to reindex my deluxes by trim (vs.) color and I observed that I have a pretty comprehensive, although not encylopedic, set of the last trim variety (a faceted clip with metal tassies on each end).
Still ISO a pen in the green-and-grey variety with this trim, although I do have one with the same clip but plastic trim.
I've got a fair smattering of the earlier models too (faceted with metal or plastic trim) but not with all the colors.
No idea what the heck happened with the red one on the far left, but the red is actually quite a bit lighter and something appears to have been painted/coated on to the clip so that it's reddish too.