I doubt seriously you'll find anything specific to Aqua Patio. There are however some generic color codes used frequently no matter what you're working on. Here's one I copied and saved a few years ago. I've spent enough time screwing with wiring to have many memorized already. Nothing written in stone here. Confirm function prior to doing anything serious. Meant as a guide only! Keep in mind shop techs who rigged the boat originally, and previous owners who may have made changes, not caring about or knowing color codes....
Purple wire: From battery terminal of starter solenoid to the "B" terminal of the ignition switch.
Purple/White wire: From primer/choke solenoid terminal to the "C" terminal of the ignition switch.
White wire: From one of the 3/8" nut terminals of the starter solenoid to the "S" terminal of the ignition switch. (Other 3/8" nut terminal goes to ground).
Black/Yellow wire: From Black/Yellow wire terminal of the powerpack to the "raised M" terminal of the ignition switch.
Black wire: From the other "regular M" terminal of the ignition switch to ground.
Purple wire: From any accessory you want 12v applied to ONLY when the key is ON... to the "A" terminal of the ignition switch.
There's also a more extended list floating around, but some I can add from memory (these you REALLY want to confirm!) -
Gray is your tach lead.
Pink is fuel tank sending unit.