I mean "color" as in what the local flora look like. It doesn't make sense for bright green grasshoppers to exist in a desert, for example: the grasses of the desert wouldn't be bright green, at least most of the time.
Some flora are green, orange, various shades of purple, black or grey, teal...compare that to Earth, where large terrestrial plants are, in nature, typically shades of green. Grass and trees can change color depending on environmental conditions, but slow color changes can be connected to the seasons passing. On Sagan 4, something like a katydid can, in the spring, immediately jump from a green tree to an orange tree to a purple tree. On Earth, the katydid would just be jumping between trees with different shades of green.
if an area that used to be dominated by purpleflora suddenly has very big blackflora trees, large fauna being bright purple doesn't make as much sense as it used to. Predators with decent color vision, or even light contrast detection, could pick them off easily in the daytime. The formation of a Dixon-Darwin-Vivus supercontinent has made Great American Interchange-esque extinctions inevitable, as heralded by the Argusraptor complex. That species complex in particular wiped out several organisms poorly matched to their environments. Flora spread by shrogs has, and can, rapidly change the floral composition of an area, or at least beach areas.
If it's made more explicit multiple flora colors are dominant in an particular habitat, it might encourage the spread of fauna which can change their colors, fauna which have different colors at different parts of their lifespans, color polymophism in a population, organisms which have one pattern that's good enough for mixed color environments, or organisms which only match one environment but are very good at staying in there.
A beaver-like fauna, for example, might require different adaptations, or levels of adaptations, for eating chitin-based crystalflora compared to woody blackflora like Chameleon Obsidishanks. Since digestibility type can change rapidly, though (multiple herbaceous plants can become woody "trees"), it might be more trouble than it's worth to mention floral types.