During their last trip around South Italy, my friends Guido and Christian have discovered, among the others, these fantastic stripers. Each "cylinderhead" striper has her "spook" striper of the same colour perhaps to distinguish the phases. We have never seen anything like that, in Italy. Great discovery!
Update: all the stripes are all originals and glazed. Not added in a second time as written by Francesco Bianchi in his interesting post. If they were added probably the colours were faded but as you can see all stripes are very shiny!