CSI - Simplicity 7082

In doing research on tea dyeing, I did learn about old stains resurfacing. As I am using old sheets, I am thinking where is the CSI crew? I watch too much TV.

And for those who are following, and who were very helpful, the buttons will be spray painted with a special rusted effect which is going to look smashing. I didn't know there was rust paint, I didn't know some people wanted their stuff to look rusty, but my hardware store guy did. Thanks!