In Paper Mario: Color Splash, Mario can get covered with six different colors of paint during the battle against Roy, each of which affect him differently. This is Mario’s animation under the influence of the orange paint, which gives the message “Mario’s feeling self-conscious…” Since the paint is covering his head in-game, the fact that he is blushing can only be seen by extracting the sprites from the game’s files.
Comparison between the actual size of Mario’s sprite in the Paper Mario series. From left to right: Paper Mario; Paper Mario: The Thousand-Year Door; Super Paper Mario; Paper Mario: Sticker Star; Paper Mario: Color Splash.
A localization oddity in Paper Mario: Color Splash: the washing machine on Vortex Island in the North American version is top-loading (top picture) while it is changed to a front-loading one in the European version (bottom picture). In order to justify the vortex still pointing upwards, the front-loading washing machine needed to be propped up against something. So the localization team decided to redesign the laundry room into a cave in order to include a rock for the washing machine to lean onto.