Here is the grill with the paint removed. One thing I don't recommend is using paint remover. Wire wheels and paint remover do not mix, you'll get it all over.
Here I can take a grinder break and paint the body with a flat black.
Another angle. Two coats of this flat black from a dollar store does the job.
While the body dries, I continued on the brackets.
Like I mentioned earlier, a scuff pad helps. Rust dust gets all over.