This is the unsupported premise, the thing taken for granted which no one seems to be able to back up with reasonable principles. — Metaphysician Undercover
Perhaps examining the science of color might shed some light on this.....
"The interdisciplinary field of animal coloration is growing rapidly, spanning questions about the diverse ways that animals use pigments and structures to generate color, the underlying genetics and epigenetics, the perception of color, how color information is integrated with information from other senses, and general principles underlying color’s evolution and function. People working in the field appreciate linkages between these parallel lines of enquiry, but outsiders need the easily navigable roadmap that we provide here."
"Here, a group of evolutionary biologists, behavioral ecologists, psychologists, optical physicists, visual physiologists, geneticists, and anthropologists review this diverse area of science, daunting to the outsider, and set out what we believe are the key questions for the future. These are how nanoscale structures are used to manipulate light; how dynamic changes in coloration occur on different time scales; the genetics of coloration (including key innovations and the extent of parallel changes in different lineages); alternative perceptions of color by different species (including wavelengths that we cannot see, such as ultraviolet); how color, pattern, and motion interact; and how color works together with other modalities, especially odor. From an adaptive standpoint, color can serve several functions, and the resulting patterns frequently represent a trade-off among different evolutionary drivers, some of which are nonvisual (e.g., photoprotection). These trade-offs can vary between individuals within the same population, and color can be altered strategically on different time scales to serve different purposes. Lastly, interspecific differences in coloration, sometimes even observable in the fossil record, give insights into trait evolution. The biology of color is a field that typifies modern research: curiosity-led, technology-driven, multilevel, interdisciplinary, and integrative."
"Colors in animals and plants are produced by pigments and nanostructures (2). Although knowledge of mechanisms that manipulate ultraviolet (UV) to infrared wavelengths is accumulating (3), we lack an appreciation of the developmental processes involved in cellular structure and pattern formation at optical scales (nanometers to microns). Nonetheless, the field of soft condensed matter physics (4) holds great potential for new insights into optical architectures. This will be a critical foundation for future understanding of ordered self-assembly in colored biological materials, from β-keratin in birds’ feathers (5) to chiral or uniaxial chitin structures in beetles (6). Such knowledge can illuminate the costs, constraints, and evolution of coloration."
" Perhaps the most striking case where the rules of “normal” color vision do not apply are stomatopods (mantis shrimps); these have many photoreceptor classes (up to 12) but relatively poor color discrimination ability (36) (Fig. 2)."
"Mechanisms of vision and visually guided behavior should be studied from the top down, as well as from the bottom up."
"Importantly, visual properties can be substantially affected by other sensory modalities. For instance, swallowtail butterfly responses to colors are modified by host plant odors (54)."
"Nonvisual sensory information alters how receivers respond to color signals."
"Whether and how organisms resolve trade-offs depends on the shape of the fitness curve resulting from different selective forces."
https://science.sciencemag.org/content/357/6350/eaan0221
The bottom line is that any dualistic perception is very limited. We sense much more than what is pointing outward (observed) from 'self' (subject), but we do not recognize it from a dualistic perspective. When we remove 'otherness' from the equation, perception (measurement) ceases. We need to focus more on that missing component that was disregarding from Ockham forward. Thank goodness there are several fields of study engaging in what has been overlooked for centuries. It is my hope that advances will be made in time to address some of the damage.