Well i mean they're out there for sure, I just got a couple of each with my Vortex 22-key switch tester set from Massdrop. Just need to find a source. (this kit also included some of the "new" cherry blacks and a large logo vintage black for comparison... gotta say, cherry did a huge improvement in their new blacks... huge.)
As for the silvers... i can take a pic if you want, they are physically about 1mm shorter to bottom than say a standard red switch.