A stunning one-of-one collection of Bentleys, the Greystone Collection, has been announced by luxury automobile retailer O'Gara. Its Westlake location will be the lucky retailer for this collection of stealthy Bentley models, and Southern California collectors will no doubt be lining up for an opportunity to get their hands on one of these exotics.

O'Gara is the same retailer that recently listed an extremely rare Aston Martin Lagonda Taraf sedan, so the company has an eye for something special, and that's precisely what these five Bentleys are. As the name suggests, the Greystone Collection Bentley models - crafted by the Mulliner team at Bentley Motors - are all finished in Cambrian Grey paintwork, with the group including a Continental GT V8 S, Continental GTC V8 S, Continental GT Speed, Bentayga V8 S, and Flying Spur V8 S.

"With all our collaborations and bespoke projects, the team aims to push the boundaries and engage with our manufacturer partners to bring exclusive offerings to the Americas and our home of Southern California," said Tom O'Gara, CEO of O'Gara.

As proudly pointed out by the retailer, this collection took over 14 months of collaboration between O'Gara's Bentley Westlake, Bentley Motors Americas, and the Home of Bentley Motors Limited in Crewe. It is also the first collection to feature Bentley's latest S models and the first Bentley collection in decades that spans the marque's entire model lineup.

Last year, the Continental GT S and GTC S were revealed, with all the add-ons intended to provide the driver with a more engaging experience, but not at the expense of comfort. The additional equipment included a sports exhaust and a 48-volt electric active anti-roll system.

Delving deeper into the GT S, we can also see it comes with a black matrix grille and dark exterior finishes, replacing the bright chrome of the standard GT. All models have a dark surround for the headlights and black wheels.

Unlike some other Bentley S models with red calipers, these models all have calipers that stick to the greyscale theme.

Inside, the GT V8 S has decadent black leather interior with stitchwork in a vivid yellow/lime and carbon fiber trim on the dashboard. A similar specification has been applied to the remaining five models.

On the Flying Spur S, we can see a plaque on the door sill that specifies this car as one of just five members of the Greystone Collection. Being a more practical sedan, this Bentley has more spacious rear seats and headrests with soft cushions, also with the same yellow/lime piping, and striking diamond stitching on the seats.

The specification suits each Bentley to a tee, and reminds us of the Rolls-Royce Wraith Black Badge Arrow Collection that also blended darker colors with vivid yellow splashes in the cabin. Grey remains one of the most popular car colors in the world, but while it can look a little boring on an anonymous compact crossover, it is the perfect accompaniment to the majestic lines of each large Bentley.

While the GT Speed has a mighty W12 engine, every other model in the Greystone Collection comes with a turbocharged V8, but all provide truly effortless acceleration with a hint of sportiness.

As far as pricing goes, these exclusive Bentleys are as expensive as expected. The Bentayga V8 S is listed for $316,430 on the O'Gara website. Even more expensive is the Flying Spur V8 S at $341,970 and the GT V8 S at $363,285. The GTC and GT Speed were not listed on the site at the time of writing.