I would recommend folks just put some heat reflective tape on it.
Capable of reducing 80% of reflective heat, >$10
[ame="http://www.amazon.com/HeatShield-340110-Cool-Foil-Shield/dp/B0051USC0E/ref=sr_1_11?ie=UTF8&qid=1349723247&sr=8-11&keywords=heat+reflective+tape"]HeatShield 340110 Cool Foil Tape 1" Wide x 10' Heat Shield Foil Tape : Amazon.com : Automotive[/ame]