A digital remaster of the very first Pokémon episode recently debuted on Japanese television. The episode originally aired on April 1, 1997, and has been remastered before. The clip below compares all three versions. On the right is footage from a Kids Station re-run of the original episode. On the left, you can see the 2012 remaster with the gray-black bars and the latest remaster with the greenish-yellow ones.
Source: Kotaku East