I replaced Castform's sprites using the Advanced Pokemon Sprite Editor, and now I'm having an issue--the alternate forms are completely black. Looks like something happened in regards to their palettes, and I'm not sure what to do to make them use their original palettes.
For reference, I didn't alter their palettes at all--the new sprites share the old palette, which fits perfectly. But I don't know what to do to make the alternate forms use their old palettes again.
Any chance someone could run me through some steps to fix this?