1968 Commando chain giuard colour

The petrol tank & tail on my 1968 Commando were originally metal flake red but the chain guard and extension piece were also that colour when I became it’s second owner in the early 70’s. That has puzzled me because all the information I have seen says the chain guards were all black. Does anyone know the truth?

I believe some bikes were repainted at the distributors/dealers when new.The original colors were too bland for the mod squad hippie 60's. I have seen the chain guards and side covers painted to match the tail and tank on some but not all 68's. Was your bike imported from the USA?