I don't know why you wouldn't just make your own topic, but no. The extra palettes can't be used by party members.
There might be an ASM hack to enable it, though. But I have no idea. And don't expect it - if it exists - to be usable on PSP.
There might be an ASM hack to enable it, though. But I have no idea. And don't expect it - if it exists - to be usable on PSP.