I'm not gray anymore!

Single stage non metallic, when properly cut and buffed, gives an amazing luster, and yours already looks darn good. I'm sure you know this, but without a clear coat, you will need to protect the paint well with a good quality wax or coating after the prescribed curing period (usually 30-60 days). I use Blackfire Ceramic coating from Autogeek.net. The shine is amazing. I did my new black Jeep Grand Cherokee 2 years ago, and it still looks great and sheets water like crazy.