The Wikipedia definition seems to indicate it has origins as a racist term and I’ve never understood why unix users have adopted this terms instead of something benign like “themes” or “theming” which I remember being in use long before I ever heard “rice”. So what gives? Why use “rice” instead of “theme”?
Again, just because no one in the room you were talking in thought it was offensive doesnt mean it’s not outside of that room.
After all, you’re here, in a different room with new people and the new people are offering you new perspectives. One of those new perspectives is that that is a racist term.