That appears to be the version that was sold during the Model 1521/Diamond Jubilee era (1984-87), so I wonder if the motor would have been a DJ motor?
The CB2000 sold during the Model 1505/Silverado era (1983-84) was 2-tone gray--the motor housing being light gray and the canister and exhaust cover being coal.
What is the model of your power nozzle?