Shiny Pokémon
An alternate colored, or shiny, Pokémon is one that has a color different from the natural one featured in the Pokédex. For example, a shiny Zubat would be green instead of blue. Shiny Pokémon are rarer than their normally-colored counterparts, and follow no set pattern in their color change per species. However, all shinies of a species have the same coloration. The probability of getting a shiny in any game is about 1/8192.
Shiny Pokémon are only in Generation II, Pokémon Stadium 2, and all Generation III games, although Pokémon caught in Generation I games may be shiny when moved elsewhere.
In the games, when a shiny Pokémon enters a battle, stars flash and surround it. Also, three stars are indicated in a shiny Pokémon's Summary screen.
In the TCG, shiny Pokémon are called "shining" or "*" Pokémon.