Pokémon : Colors

Pokémon Colors follows a single premise – what if the types of each Pokémon were determined by their colors? Every single Pokémon has gone through changes in their typings based on their Leafgreen sprite. Every Movepool and sometimes Abilities have been changed to better reflect each Pokémon's new, changed type. In addition the game features the physical-special split and vastly changed Pokémon, Encounters and Trainers, making Colors a new and unique Pokémon experience. Quite a few NPCs in the game were also given new, fun dialogue to make the world of Pokémon Colors more lively than before.

Source: TheGamesDB