Pokémon Gold and Silver/Changed graphics

Several graphical changes were made between versions. They range from changes due to Nintendo's censorship policies to seemingly arbitrary changes to details on Pokemon's sprites. This data comes from here; shiny sprites were not copied over, since the palettes remain unchanged.

Trainers
Beauties' shorts were lengthened, and they no longer wink.

Sages no longer pray.

Mediums no longer carry beads.

Female Swimmers no longer wink.

Fishers no longer smoke.

Pokemon
Most of the sprite changes listed below (e.g. Lanturn, Slowpoke, Feraligatr) were done to make the Pokemon's sprite more accurate to its official artwork; others were just minor touch-ups (Pichu, Sneasel, Girafarig). Jynx's skin color was changed from black to purple outside of Japan due to unfortunate similarities to the blackface stereotype (necessitating the bleaching of her hair), a move that later games would follow suit in.