No, I'm not nuts...really!

I am fixing up (not fully restoring) a 68 Dart right now. I ordered the 15x7 and 15x6 steel wheels from wheel vintiques. They told me they will be powder-coated black, which is fine, but I don't want black wheels on my car for a few months while I am doing body work. I intend to paint the car 68 Dodge Yellow. Anyway, I went to Lowes and found this new spray paint from Valspar and it's a real close match of the Dodge Yellow. So I bought a can and brought it home, sanded a small area of my firewall to test the color and it's a perfect match. My Dart is originally 68 Yellow so I can compare the old to the new. Anyway, this paint looks incredible. I did very little prep and no primer and I have never seen a paint lay out this nice out of a can. So, here's my dilemma. I am going to do a test panel on the passenger side front quarter panel and see how it looks. Has anyone seen a car that was sprayed with just spray paint? I haven't. Any opinions or info would be much appreciated. At least it would be a good discussion. Go ahead, let me have it. Am I nuts?????