I think I have learned the logic of palettes for TAW world. They differ according to the time and so they reflect changing light level of the day and little of the night.
There are 10 basic time and light settings:
6:00, 8:00, 10:00, 12:00 14:00, 16:00, 18:00, 20:00, moon and no moon.
There are also 4 alternate groups of settings I believe perhaps for different weather states for each of those times listed above.
There is one more palette: TV which is just grayscale with no colors.
The difference in palette is hardly noticeable and so is the result in the game. I’ll post some pictures later along with some more comments about location of specific coloros: for planes, terrain/targets, decals, sky, explosions, water etc. on the palette. Textures are grouped accordingly by subjects.