are there any particular colors that the zappers don't give?

I don't think they give hydrus, but I'm not completely sure.

They don't give neither Hydrus, Angelic, nor Galactic.

o__o they don't give angelic?

ah cool. they give nightmare though right?

No, you can only get angelic from an angelic potion, miracle potion or loyalty token.

: Yes, you can get nightmare. I got one just the other day :)

It wouldn't be fair considering you either pay real money or 30mil for the potion. c: