What are they?

Plastic "welders" exist and make repairs to plastic best. They actually heat the plastic so it fuses itself back together.

They do make "plastic" superglue but I've yet to be thrilled with any plastic repair. If they make a plastic epoxy, that's what I'd try first.

Duplicolor and SEM make great spray dyes if you need to refinish after you're done. This stuff is very thin show it shows everything. OTOH, it's very durable ad professional looking. Much better than paint where paint isn't' desired. Best part is it won't chip if prepped correctly.