Hello, I would like to find out what is the best type of paint to use for an exterior steel door. I was told to use a gloss acrylic latex paint or automovtive paint. Which would you recommend? Do you need to your a primer for these doors and what would you apply them with? The door we are planning on painting has panels on it with a middle window. How would you go about painting these? Are there any special tips you could give me on the trim around the window?