Bedrock grey, dusty enough for Fred to kick up on his way to the foot-powered car.
Flintstone is a cool grey, close to blue.
It can be described as cool, muted, greyish and dusty.
Set in white, because white reads best on it.
Flint, occasionally flintstone (SiO2), is a sedimentary cryptocrystalline form of the mineral quartz, categorized as the variety of chert that occurs in chalk or marly limestone. Historically, flint was widely used to make stone tools and start fires.
Read on WikipediaFlintstone is an unincorporated community in Walker County, Georgia, United States. Located in northwestern Georgia, Flintstone lies approximately 12 miles south of Chattanooga, Tennessee, 120 miles northwest of Atlanta, 135 miles southeast of Nashville, Tennessee, and 150 miles northeast of Birmingham, Alabama. Although Flintstone is unincorporated, it has a post office, with the ZIP code of 30725; the ZCTA for ZIP Code 30725 had a population of 3,456 at the 2000 census.
Read on WikipediaProper noun