Curious that you worded it: "...we would be tempted to call this robot a blue-minimizer." Then you said the robot "wants". The entire discussion which followed is invalid, because everyone involved assumed human characteristics to an electronic mechanical device. Robots do not have "goals" either, nor self-motivation. IT has no concept of reducing blue objects. Your "temptation" was your sensed instinct that you were stepping over the line of limitations. Even the origin of the word "robot" meaning "forced labor" is inaccurate.