Did Obama dye his gray hair away?

(By Rachel Rose Hartman, Yahoo! News) - Photos of President Obama released this week are prompting a feverish round of "does he or doesn't he" speculation about whether our commander in chief dyed his hair.

The visit of Chinese President Hu Jintao has provided the nation's pundits and politicians with plenty of serious talking points. From the potential threat posed by China's increasingly sophisticated military to the impact that Beijing's monetary policies have on the U.S. economy, there is no shortage of weighty issues. So it may be no surprise that, after Wednesday's White House dinner for Hu, the question spiking interest on the Web is about … Obama's hair.