This changes everything...

[Drashner1]

If we're going to consider this in the context of OA, there is also the question of why the colors of the 'visible spectrum' are the only ones we need to be concerned with? Plenty of Terragen clades and/or other sophonts with the right augments can see beyond the baseline human idea of 'visible light'. So a world or other thing that is very dark or dull to us might be incredibly vibrant to them. Going only slightly further afield, baseline human notions of 'real time' are equally idiosyncratic and so other beings might view what we consider to be extremely long exposure times as perfectly normal. More brownie points still if we consider that to many Terragens limiting oneself to only a single block of the EM spectrum and perception of time (instead of many simultaneously) is incredibly limiting and merely a lifestyle choice.

Just some thoughts,

Todd