It came out with green badges.
When BSA was sold to Manganeese Bronze, Moto plas ,the company that made the tank badges was sold off to another plastic moulding company.
They steadfastly refused to make badges in any colour other than black or red and even worse refused to sell unpainted badges so owners could paint them correctly.
Black or red with gold stars were standard colours and stocked by a lot of dealers, the other finishes like silver stars or green backgrounds were not stocked so there were not many of them around and a lot of owners would fit the wrong ones now if their originals were lost, damaged or stolen rather than order the correct ones.
Some pre production bikes were fitted with the black badges as you get period publications some with black & some with green.
On nearly every new model BSA fitted badges finished in the tank colours.
the pear BSA badge cane in ivory, blue ( light & dark ) red, green, & black.
Same think with the cast badges.
The new model had them painted to match the tank.
Subsequent years got the generic colour.