No because the game lacks the built in game clock feature which lets the game change from day and nighttime which is essential for evee to evolve to Espeon or Umbreon. If you want these pokemon you will need to use Ruby, Sapphire or Emerald to evolve the Evee because these games have the in game clock feature or you can even trade the Espeon and Umbreon from pokemon colosseum.
pokemon do not evolve on pokemon colosseum
no, it can not
Evolve it from eevee
Evee will never evolve to espeon or umbreon in firered because the game doesn't have internal time so to get an espeon or umbreon you must trade your evee to a game with a internal clock like ruby, sapphire and emerald. Also you can trade an espeon obtained from colosseum or even xd gale of darkness.
You can't get espeon in leafgreen so trade one from Pokemon colosseum or ruby, sapphire or emerald or Pokemon xd gale of darkness.
Ive hear my friends say that in Pokemon yellow you can evolve eevee in a espeon with a moon stone
Well, you start out with Espeon and Umbreon, if that's what you mean.
No you get a lvl.25 Espeon and a lvl.26 Umbreon.
Its not possible to get espeon in leafgreen or firered because there is no in game clock so trade evee to a game with a in game clock like ruby and sapphire then train it to become espeon. Optional other ways: If you have Pokemon colosseum or Pokemon xd gale of darkness you can trade an espeon from either game (in colosseum you begin with espeon and umbreon trade espeon to leafgreen and in xd gale of darkness in gateon port a sailor in the parts shop will allow you to get items to evolve your evee choose the dawn shard then train evee a few levels to have it become espeon then trade it to leafgreen remember both colosseum and xd gale of darkness and leafgreen must have be beaten and for leafgreen you need the national dex and the ruby and sapphire to receive the espeon from either game).
In XD, it's Eevee. In Colosseum, it's Umbreon and Espeon.
Yes, Slugma will evolve into Pokémon Colosseum. Slugma will evolve into Magcargo.