>>How do they react to gold robot butlers with an irritating subservient attitude?<<
Quite possibly better than to black robot butlers with an irritating subservient attitude. (as if any company would even dare to build one)
This brings us neatly to the robot butler dilemma, Gold would be seen as ostentatious bling and possibly poor taste in polite society whilst black ones (traditional butlering colour) will be see as encompassing a racist stereotype. Both neatly missing the point that a well trained human butler is now out of a job and all of this is due to the anthropomorphising of a machine.