Leopold tends to have factory keyboards available in off-white colours such as eggshell or cream whites, if that's what you're looking for.
If you're looking for more of a bright milky white, Varmilo has that.
The JER-A06 / J80 is being run around this time, with at least one 'classic' white option. And some people are selling their slots for E-white on the E8.5 GB.