I thought I'd update this. There are still some skeptics saying it's only helping maybe 1 degree with their sensors... Maybe so, but for me it has helped the most when the sun is setting in the evening, and the side of the bottom is baking. I now see only a two degree spike during this time, instead of a 4 to 5 degree spike over the real high temperature for the day. Today it was burning hot outside with a high of 92, and my temp had dropped down to 88 before the sun starting hitting the bottom west side of the 5 n 1, and my temp only rose up to 90 during this time, where as before, it would have gone to 95.
I hope that helps make sense of the paint job, and maybe will give you an idea of what to look for on yours.