sleep, confusion, and paralysis are shown by rotating the card counter clockwise for each of those specific statuses (to the left, asleep. Upside down, confused. To the right, paralyzed.) as such, you can only be one at a time. Burn and poison are marked statuses where you just put a marker on it. Which is why they can be added to one of the other 3. It makes sense if you think about it too.. Being asleep, confused, or paralyzed would kind of take president over the other status, while you can be poisoned and burned while any of the other 3. As morbid as that explination may seem.. And yeah, rainbow counts as all energy, but only provides one in the requirement of an attack. Like, you can't fulfill Celebi prime's attack cost with 1 rainbow energy attached.
also, while in the deck, discard, or your hand, it counts as a colorless energy. So it can't be searched out with unown dark or pulled out of the discard with Typhlosion prime.