This ’58 Ferrari—the 11th of only 50 LWB 250 GT Cal Spiders built—has changed colors so many times that it’s more chameleon than Spider. In 2014, chassis #1055 GT was red and sold for $8.8 million at RM’s Arizona auction. Two years later at RM Monterey, it was black and was hammered not sold at $9.4 million. This time around it’s gray. Could the latest color change vault the matching-numbers beauty past the lower end of its $11M–$13M estimate?