Great post and use of SGPLOT. Also, I'll note that this topic is another popular one among middle-school science projects. As a volunteer judge at the science fair for several years, I've seen many "what color car gets the hottest?" projects.

Just for once, I'd love to see the data lead to a conclusion other than black. And if I see a funnel plot as part of any of the displays next year, I'll make sure that the student has cited your blog.