Old Fashioned

We went on a walk with the kids yesterday.  Everything was so pretty and green, a result of all the rain, I suppose.  As we were walking, we walked past a plant that had died and was grey.  Ellis pointed it out and said, "It's an old fashioned thistle! You want to know how I know it is old fashioned?"  I told him I did. He said, "Because it is black and white."