Question: What was the color of the twin-rotor Wankel rotary engine car driven by Peter McLeod?

Context articles: Mazda RX-8 Hydrogen RE
Mazda GTP
Peter McLeod
Mazda RX-7
General Motors Rotary Combustion Engine
Wankel engine
Mazda RX-9
Pistonless rotary engine
Norton Commander (motorcycle)
Mistral G-300

The Mazda RX-8 Hydrogen RE is a 2003 bi-fuel version of the RX-8 sports car, in which the twin-rotor wankel rotary engine is configured to run on either hydrogen or gasoline.
 This is the fifth Mazda vehicle to be fitted with a hydrogen wankel rotary engine.
 The hydrogen tank, with a capacity of 110 liters at 350 bar stores up to 2.4 kilograms of hydrogen and is fitted in addition to the 61 liter gasoline tank.
 In 2005, Mazda obtained street approval for this vehicle.
 The following year, the first vehicles were leased to customers (Idemitsu and Iwatani).
 In November 2007, Mazda announced the delivery of 30 RX-8 HRE to the Norwegian hydrogen project Hynor.
The Mazda GTP is an IMSA GTP car that was built by Pierre Honegger in 1981.
 Based on a Mazda RX-7, the car initially competed in the GTX category as the Mazda RX-7 GTP, before it was rebuilt for the IMSA GTP category in 1983.
 Throughout its career, the car used a Mazda 13B Wankel rotary engine, similar to that used in the production RX-7s.
 Although the rotary-engined sports prototypes generally had a reputation of being very reliable, the Mazda GTP frequently failed to finish races, and was never able to better the eighth place achieved at the 1983 24 Hours of Daytona.
 In 1986, one car was purchased by Erie Scientific Racing, and rebuilt to become the Badger BB.
 This car was no more successful or reliable than its predecessor, and was last used in 1989, by which point it was owned by Jack Engelhardt.
 The other car, meanwhile, was rebuilt by Honegger into the Denali Speedcar, which was used with moderate success in 1986 and 1987.
Peter Gerard McLeod (born 6 May 1948 in Newcastle, New South Wales) is a retired Australian racing driver, best known as co-winner of the 1987 James Hardie 1000 at Bathurst, and for driving the distinctive yellow and black Slick 50 Mazda RX-7 Group C touring car during the early to mid-1980s.
The Mazda RX-7 is a sports car that was assembled and produced by the Japanese automaker Mazda from 1978 to 2002.
 The first RX-7 featured a 1146 cc twin-rotor Wankel rotary engine and a front-midship, rear-wheel drive layout.
 The RX-7 replaced the RX-3, with both models sold in Japan as the Mazda Savanna.
The General Motors Rotary Combustion Engine (GMRCE) is an internal combustion Wankel engine which uses a rotary design to convert pressure into a rotating motion instead of using reciprocating pistons.
 In November 1970, GM paid $50 million for initial licenses to produce their version of the Wankel rotary engine, and GM President Ed Cole initially projected its release in three years.
 Chevrolet, with impetus from Pete Estes and John DeLorean, as well as Ed Cole worked on the Wankel.
 Bob Templin was the chief executive in charge of rotary-engine research at the GM Tech Center in Warren, Michigan, but Ed Cole would leave his office in Detroit twice a week for the trip to Warren, taking charge of the program.
 The engine was initially targeted for an October 1973 introduction as a 1974 Chevrolet Vega option.
The Wankel engine is a type of internal combustion engine using an eccentric rotary design to convert pressure into rotating motion.
 In contrast to the more common reciprocating piston designs, the Wankel engine delivers advantages of simplicity, smoothness, compactness, high revolutions per minute, and a high power-to-weight ratio primarily due to the fact that it produces three power pulses per rotor revolution compared to one per revolution in a two-stroke piston engine and one per two revolutions in a four-stroke piston engine (although at the actual output shaft, there is only one power pulse per revolution, since the output shaft spins three times as fast as the actual rotor does, as can be seen in the animation below, making it roughly equivalent to a 2-stroke engine of the same displacement; this is also why the displacement only measures one face of the rotor, since only one face is working for each output shaft revolution).
 The engine is commonly referred to as a rotary engine, although this name also applies to other completely different designs, primarily aircraft engines with their cylinders arranged in a circular fashion around the crankshaft.
 All parts rotate consistently in one direction, as opposed to the common reciprocating piston engine, which has pistons violently changing direction.
 The four-stage cycle of intake, compression, ignition, and exhaust occur each revolution at each of the three rotor tips moving inside the oval-like epitrochoid-shaped housing, enabling the three power pulses per rotor revolution.
 The rotor is similar in shape to a Reuleaux triangle with sides that are somewhat flatter.
The Mazda RX-9 is a sports car produced by the Japanese automaker Mazda scheduled for release in 2020.
 "Holiday Auto", a Japanese magazine, reported it will be previewed at the 2017 Tokyo Auto Show, and the final production model will be featured at the same event in 2019.
 The car will be released in January 2020, to coincide with Mazda's 100th anniversary, and will be initially priced at eight million yen (US$(8000000/ 105.944781 )round0 in 2015).
 It is believed it will showcase the return of the Wankel rotary engine, but CEO Masamichi Kogai said Mazda will not launch another rotary engine.
 In the middle of the September 2017, Mazda has filed a patent application for an engine that uses two conventional turbochargers and an electric supercharger.
 The engine looks compact, can replace the rotary engine and possibly be included in RX-9 production.
A pistonless rotary engine is an internal combustion engine that does not use pistons in the way a reciprocating engine does, but instead uses one or more rotors, sometimes called rotary pistons.
 An example of a pistonless rotary engine is the Wankel engine.
The Commander was a Norton motorcycle with a Wankel rotary engine.
The Mistral G-300 is a Wankel rotary engine being developed by the Mistral Engine Company for use in light aircraft and helicopters.
 It is currently being readied for certification by the United States FAA.