Man... that was such a rare encounter. I knew it was rare back then as well, and I wish I had kept that CFL.

I just disposed of about 400 3000K fluorescent lamps, both T12 and T8.  Offered them for free on Craigslist and Facebook Marketplace, no takers.  Got a few people messaged me if I had any 3500 or 4100 though.  I am not getting rid of those. 

For some reason they're not very popular. If you'd have been local, i'd gladly accept a couple. They're surprisingly hard to find here in *any* size or power rating.
I just found an 18w T8 in a garage fixture with remote ballast, very happy with that, but the total of 3000k halophosphate lamps i've encountered for sale in a full year, is 4 (including the garage lamp, excluding the Crompton ones that appear to have an additional phosphor).

That's in contrast to the dozens of 4000k ones i could've gotten, but i don't care much about those...