Yes I will conceed it is far from an ideal way of describing how things are and with that, somewhat subjective in perception. For me, it gets down to physics a

Yes I will conceed it is far from an ideal way of describing how things are and with that, somewhat subjective in perception. For me, it gets down to physics and how we perceive things. From a human perception aspect - the true colour of grass is green. But when you add the science aspect, it is not that clear cut. Somewhat gets down to context. For me - if an object emits light - that's it's true colour. Equally how it refracts light is the perceived colour. Objects that emit light have a true and perceived colour the same. Though there is always other factors like whats in between the object and the light (be that refracted or emitted). The sun and sky being good example of that at play. But equally even at a small scale, the air will have an impact, even if we can not perceive it. But yes, we're all human and with that, you are right in that the true colour from our perception shows grass is green. So I'll try and refer to grass as its true colour of green and it's physics colour as red/blue. Which feels perhaps a better way of phrasing and one I'll try and run with until something better comes along.