It stood in bright contrast to the modern cars around it, whose paint jobs—pearlescent white, iridescent silver, high-gloss black—suddenly seemed to be variations on the same boring theme.

Its title was quite simple, reading just "KM Cars?" "Have you ever heard of ... gray or black and no discernible features besides the large silver KM logo on the backs. They were headed North ...

Tesla updated its online design studio today to discontinue two color options, Titanium Metallic Silver and Solid White, for the Model S and X – bringing the number of color options down to only 7.