Hey folks I'm looking to black out my chrome. I'm not wanting to fork out the cash for wo2 trim so I thought I'd try out blacking out my chrome before I bought some wo2 trim. For those that have done this does SEM trim paint require primer? I've read of people using primer and some not. I'd like to only do this once if it turns out nice. Also how many cans would I need? All of the lower trim is gone now. I pploaded a pic of my project. Thanks