I take Marc's "sealed in amber" statement as referring not to the color, but to the properties of amber that keep anything inside it, such as a stray insect, sealed for thousands of years.
Remember "Jurassic Park?" From Wikipdeia: "...Jurassic Park, a theme park showcasing cloned dinosaurs, which have been recreated using damaged DNA found in mosquitoes that sucked dinosaur blood and were then trapped and preserved in amber."