I've looked up other images of the Japanese cartridge, and some appear to be on the black cartridge. So I'm wondering if what I purchased is a bootleg.

Comparison between my American cart, and the Japanese grey cart
Japanese black cart.
Given the delay in it being released in America (January 27th 2000) and japan (September 25th 1998)
And since it was released in japan before the gameboy color was. Could it be that the first print of cartridges used the typical grey cartridge, compared to the black?
