Trade palette glitch
The Trade palette glitch is a glitch that occurs in Pokémon Red and Blue in all regions when trading on a Super Game Boy 2.
The trade screen (when selecting a Pokémon to trade) does not set a palette. Therefore, the palettes on this screen, including the colors and the areas on the screen, are based on any palettes from the preceding screen. This results in the following:
- When initiating a trade, the palette is blue for the entire screen, which is the palette of the Cable Club.
- When viewing a Pokémon's summary, a small area on the top of the screen will have one palette, and the rest of the screen will have another palette. The palette in the upper area is whatever Pokémon the player viewed, and the palette in the rest of the screen will be green, yellow, or red, depending on the Pokémon's HP.
- After completing a trade, the palette will be the Pokémon that the player just received (if they received it after the other player) or a purple hue (if they received the Pokémon before the other player).
This was fixed in Pokémon Yellow, where the trade screen is always a brownish hue, regardless of what color palettes the preceding screen used.
Likely the reason why this occurs is because the original Super Game Boy did not have a Link Cable port, making trades impossible on it. Later, the Super Game Boy 2 came out, which has a Link Cable port, but Pokémon Red, Green, and Pokémon Blue (Japanese) were released in Japan before the Super Game Boy 2 was. While Pokémon Red and Blue was released internationally after the Super Game Boy 2, the SGB2 was only released in Japan, which might explain why the glitch was not fixed in international releases. Pokémon Yellow was released after the Super Game Boy 2, which might explain why the glitch was finally fixed in that game.
YouTube video
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