Now go deeper down that rabbit hole. What are you actually referring to when you say the red apple has the property of every colour except red? What other properties does this apple have? How are you determining the boundaries of “apple” from it’s surrounding environment? Are you suggesting that there is a ‘reality’ that is different from that which we perceive? If so, what does that even mean if we are not able to engage with it? How would it be any different from say, a dream world? Here’s some interesting starting points: plato.stanford.edu/entries/color/