Jigglypuff's Green Costume

[DoChobin]

I remember reading somewhere that hacks for Jigglypuff cannot be put over her green costume unless if they were specifically designed for her green costume. Is this true?

If it is, is there any easy way to take a normal hack for Jigglypuff and edit it in some way so that it can be placed over the green costume? There is a hack I would like to use, but my only remaining slot on Jigglypuff is the green one.

Thank you.