Palettes Mode.

[Maincrosift]

Hello, I've wanted to know how can I make a palette modes without screwing over.
"What do you mean palette mode?" Let's say is, when I select an specific palette (normally the 7 - 12ps),  the char will have a different style of gameplay, a new mechanic, change sounds or just straight up be buffed up.
Examples:
Man U well: at the 12p palette, the sounds are completely changed to simbolize the symbonic edits.
Donald (Or Ronald McDonald edits in general): the 12p, Donald becomes dark and he's more op.
Super Mario: four specific palettes gives Mario new modes, Matrix, Ghost and Stone.

I've always wanted to know more how they work and how you make them.
Can someone teach me (or the others that want to know that) how to make a palette mode?
Thank you for reading this and have a nice day/evening.

[PlasmoidThunder]

You trigger whatever palette-specific sctrls using PalNo, which returns the selected palette index.

[Maincrosift]

I thought it would be something like that.
Thanks.