3rd Gen Make existing pokemon shiny?

[Marugi]

Hi everyone,
Not sure if this is the right section, but I was wondering if there is a way to make an existing pokemon shiny in fire red. Does anyone know a cheat code for this?

 

[Otamajakushi]

You probably have to find a gameshark or action replay code for it. Other than that, you'd have to look for a save editor that will do it. Try A-Save; it might have the ability.