Gray P Switch

Gray P Switches (or Gray P-Switches ) are objects in Super Mario World. They appear identical to normal Switch Blocks except that they are gray with a pink rim as opposed to blue with an orange rim. When pressed, they turn all enemies that are onscreen into Gray Coins.

As revealed by hacking, Gray P Switches also possess the ability to transform Munchers into ordinary Coins for the duration of their effect, similar to regular P Switches in Super Mario Bros. 3. However, as Gray P Switches never appear in the same levels as Munchers in any level in Super Mario World, this functionality can not be seen in game.

Trivia

 * In Super Mario Bros. 3 for the NES, Switch Blocks appear in a gray palette in the fortress levels, predating the Gray P Switches.