What happens if a ghost Pokemon uses curse on Kecleon in Generation IV?

Question

Hypothetically, Kecleon should become a ??? type, as color change "Changes the Pokémon's type to the foe's move" ( http://pokemondb.net/ability/color-change ). If this works, what are the defenses/weaknesses it gets, etc. Or, because curse has no defined type, does Kecleon not change?

Answer 1

"When hit by a damage-dealing move, a Pokémon with Color Change will change its type so that it is the same as that of the move that harmed it. If the Pokémon with Color Change has a Substitute, its type will not change if it is hit by a damage-dealing move until after the Substitute is broken. It will change both types of a dual-typed Pokémon which has gained this Ability. This Ability does not apply to Shadow."

It wouldn't change since Color change only activates when hit by a damaging move. Curse, when used by a ghost, is considered a secondary status. (You can switch out to get rid of it, and it doesn't direclty damage Kecleon.)