Dr. Deltron, your last post triggered old menories. At a mine I worked at in Africa we used different colored types of rattle can paint to mark things and write instructions on the rock underground. One foreman had been checking out a little more paint than the rest of us. Someone finally went inside his Company house and found he had been painting all his walls with stolen spray paint. At least he kept any one wall in a room the same color.
One day I popped open an empty can and showed my bantu work crew that catseye marbles were used as the rattlers to keep the paint mixed. One man got excited and wanted a marble of his own. Before we could stop him he slammed the end of his crowbar into one of my cans of paint. Blooey!! Most of the 2000 men coming off shift that day must have laughed at him all the way to the showers
.