Car seat question

Some one gave me a graco car seat. Its good. Never been in an accident. However its for a girl. I'm having a boy. I have a car seat that we bought but I thought we could keep the girl one as well but is there some way I can order a new cover for it? Not an extra one but one that is actually made for a graco car seat by the company. Like a replacement cover to make it a boy car seat of at least neutral because its black with pink flowers lol. Not an add on but I want to remove the girl one and replace it with a boy one.