(Not OP)
No, not the billions, but yes the results of other searches when filtering by ".com available" such as (:colors:)((:words/adverbs:)|(:words/verbs:)) and then maybe if I also limit the length of the domain from there - there wont then be billions of results
As a side to that, could :colors include more of them? There's definitely more than 12 usable colour names!