If my memory is serving me correctly, I remember that the Eastman Kodak Company used to use screwtop securers on top of their 50-pack cakeboxes.
These cakeboxes had a thick black base and an all-over white cover. The screwtop was black.
Also, Pioneer Video Corporation of Japan used to use transparent-coloured screwtops on their 50-pack cakeboxes.
Can anybody confirm this?