The Samsung Galaxy Watch 3 is not yet official but it has just leaked a second time this week, this most recent time being the new Bronze color that Samsung will be offering to customers.
Though it does look like Rose Gold from the image, Evan Blass, who leaked the image, has the Galaxy Watch 3 listed with the official name of the color as Bronze.
Samsung may always choose to come out and release more than two colors of the Galaxy Watch.
Keeping that in mind, the Bronze option may be not only the second color of the watch, but the last color that Samsung initially releases.
To be clear, there is nothing to suggest that Samsung will or won't launch more than two colors of the Galaxy Watch 3.