Some people say that all knowledge is scientific, and all science is colorless, and when we are pursuing knowledge, we must know that there is no color attitude. If this statement is not expanded at will, I also agree. But we must know that as long as To be a living person, there must be color. The pursuit of colorless knowledge must lurk with a power of color behind it or at the bottom. This driving force not only determines the direction of a person's pursuit of knowledge and The outcome also determines whether a person is sincere to knowledge. What does "the power of color" mean in this passage? ['Research attitude.', 'Value orientation.', 'Ethical standards.', 'Hobbies.']