Paint Question

Need some advice from this board. I recently had some crawl space doors made out of expanded metal. Right now they are bare metal. I house is old brick that’s been painted with a latex exterior flat paint. If I wanted to spray paint/prime the doors with something prior to painting them to match the brick, what should that be? I was thinking enamel paint/primer for metal, but wasn’t sure if I could go over it with the latex. Thanks in advance!