Things are not always what they are. Light comes in different wavelengths, so many different spectral combinations are possible. But, most humans only have three color cones; red, green, and blue...the primary colors. This means that we can only perceive a certain range of color combinations. Any in the red range are seen as red by our brain, because we are trichromats...having only three color cones. Most birds are tetrachromats, as may be several species of fish, amphibians, reptiles, arachnids and insects. They see ultraviolet as well as RGB. This opens up many more color combinations. It is also possible that some women have a degree of tetrachromacy, because they carry two different X chromosomes in their cells, and some of them could be carrying a variant cone pigment. So, basically an object can be something different when seen by different people. This is why I said things are not always simply what they are. What they are can be different to different people...where color is concerned in the sense of physics at least.
It has been "guessed" that humans may "possibly" be able to see many new colors in heaven. This is a scientifically possible guess, because all it would take is for our eyes to have a fourth or even fifth cone. This opens up so many more combos of color range to be perceived. Think about that for a moment. What I am saying here is that there is much color in this world that we do not see. Wow! I am amazed by this little fact alone. We are truly blind to the world around us, here on Earth. We are blind and we cannot see! It stands to reason that we should not base our understanding of truth on what we can see. Hence, the maxim in the Bible that states:
Psalms 14:1 The fool hath said in his heart, There is no God. They are corrupt, they have done abominable works, there is none that doeth good.
Psalms 53:1 The fool hath said in his heart, There is no God. Corrupt are they, and have done abominable iniquity: there is none that doeth good.
A man who is truly physically blind can perceive many things. He is not truly blind in his brain. Vision is a mental act, using the tools of the eyes. So, the blind man constructs vision using his other senses. It is a more limited vision than a sighted man has, and he considers himself blind. But, he sees to an extent. While the sighted man sees less than God sees, and thinks himself more intelligent than to believe in a God. How blind!
Man can only imagine what heaven may be like. There is an unlimited possibility of new colors, smells, tastes, and sounds that we may perceive the sensation of when we are in our glorified bodies. To think things are what they seem to be is...senseless...just use your senses and you will see.