thats not a glitch. That is part of the gameboy color hardware. you are just swapping color palletes.
read more about it here Game Boy Color Modes – GB Studio Central
6 Likes
Oh so this can be done on other games too? I literally only played Pokemon on mine so wouldn’t have known otherwise.
You learn something new everyday! Thanks!
1 Like
np, its one of those wacky things you just don’t know unless someone has done exactly what you did! So honestly bravo for being one of the few to figure it out. As the article says, the gameboy color itself has special color palletes hard coded into it for a select handful of games. I think the most notable ones are probably nintendo games. So try all the color combos, see what you like.
I haven’t played a lot and the amount of glitches i’ve encountered during that time is even smaller, but i’m determined to answer every qotd so i’m mainly echoing some previous answers, while fishing in a statue did get a smile out of me i was more amazed about how some glitches like the mew one worked and how the details were found, i really didn’t know if someone actually pulled it off accidentally and just managed to repeat everything they did so reading here how they actually got figured out was super interesting 
1 Like
Not best but I always liked saving in a spot when you cut down a tree in r/b/y and when you load up again you are on top of the tree. Statue fishing, and then the mew glitch where you had to avoid a couple trainers, fly, and then the menu pop up, that was cool.
2 Likes