The cap colors are how we identify them in the beer closet since we don't label our own. So just looking at that pic I can tell I sent you:
Long neck/white = Texas Y'All, Praline Brown Ale
Shorty/yellow = RCE, JPSherman's APA
Shorty/black = Trick or Treat, Imperial Irish Stout (kind of a Guiness clonish sort of thing but not exactly
)
Long neck/green = Joe's beer, APA (I think since we drank them all)
Long neck/blue = ItsaBella, Bell's Two Hearted Clone (and cleverly named after a certain hairless cat who is somewhat famous on the Borg
)
Long neck/red = An Dromeda, Galaxy hops IPA (our attempt to brew a beer we got from Christ872, one of our long lost
units)
Once a batch is done we can re-rotate a cap color to that bottle type so there are never two of the same type bottle with the same cap color.
I love the backdrop in your picture too, just looking at that makes me thirsty.