I thought the OEM covers were black. Here is what Honda says about 1976 Honda CB750F:
It was available in one of two colors: Sulfur Yellow or Candy Antares Red
The instrument faces were bright green
The exhaust was a 4-into-1
The tank and rear cowl were the basic color (yellow or red); but the side covers were black
The wheels were wire spoked with a single front disc brake and single rear disc brake
The engine and fork legs were silver
The engine was a 736cc SOHC 2-valve air-cooled inline 4 cylinder linked to a 5-speed transmission and chain drive
The serial number began CB750F-2000003.
Dan
66 S90
64 C102
65 C100
65 CT200 Trail 90
74 CB350Four
73 CB750K3
76 CB750A
03 VTX1300S
Bicycle with HF engine