One of these rare Pokémon is Celebi, the adorable yet powerful Time Travel Pokémon. In Pokémon 4Ever, Ash gets the chance to meet this special Psychic/Grass-type himself after it arrives from ...

Children's animated film. Ash, Pikachu and the gang travel to an island to investigate an especially rare species of Pokémon, Celebi, which has the power to travel through time. Show more ...

Obviously in the last movie starring Celebi, Pokemon 4Ever, Celebi was it's regular color scheme. Maybe since Celebi can travel through time, it's capable of soft resetting itself until it's Shiny.