The IBM beige two-tone color theme only appeared together with cylindrical caps with the first Model Fs in the Eighties. I don't know of any original IBM spherical key caps in that color theme. With sphericals, the colors were rather black and white, or different grays, or in more daring colors. There's the beige Displaywriter keyboard that was released in 1980, but it's monochrome.
So combining sphericals and this color set seems ahistorical, certainly not "OG IBM" (whatever that should mean).