I was looking over a large porcelain insulator collection purchase today with my co-buyer. We found this OB cable top in green. The NN signal on the left is posed for color comparison. The green OB on the right is of a color that I had not seen before in any porcelain pin type. Is this a 'normal' color for an OB cable? Just curious. Some kind folks have informed me that this color is unusual, and found in Kansas City.