After we were done, we went inside to wash up. I was surprised that the stuff on my hands didn't wash off all the way. I didn't think much of it, because it wasn't too bad. When I looked at Brandon's hands, however, I was shocked. His hands were black! We've tried many things to get it off - dish soap, fingernail polish remover, butter. He even stuck a finger in the gas can to see if that would help. Needless to say, it didn't do much. Here's a picture of his hands this morning (2 days later - after many, many attempts at cleaning).
We've read some information about it, and indeed there is a dye in walnut husks that people use to stain wood and other things. We haven't found anything that will take it off yet. Apparently, it has to wear off and will take about a month! We'll let you know I guess. Oh well!
Here's a few sites about harvesting and storing walnuts (we wish we would have found them before we tried it!):