An Oxidized Crayon

When I was going through a sealed box of 1990 vintage Crayola crayons for a Psychospectral Wax Placement in Young Children project (or "why do I know how the crayons ought to be arranged), I came across a color not typical to the 64 count box:

As you can see, that's not the classic copper. Perhaps because this particular box was sealed into a tin box for 16 years, the copper (and to a lesser extent gold) crayon has aquired a thick patina. Here's where I scraped away a bit of the patina to reveal the familar color below:



That's cool.