A vivid cone of clashing colors springs forth from your hand, causing creatures to become stunned, perhaps also blinded, and possibly knocking them unconscious. Each creature within the cone is affected according to its HD.
3 or 4 HD: The creature is blinded and stunned for 1d4 rounds, then stunned for 1 round.
5 or more HD: The creature is stunned for 1 round.
Sightless creatures are not affected by color spray.