The NPatch allows new, custom palettes that can be applied to animations and even structures. This changes the palette which the game will draw that particular animation.

For instance, Palette=test.pal would load test.pal.
Palette=[Filename with .pal extension (31 character maximum)]

Example:
[YATECH_A]
Normalized=yes
NewTheater=yes
LoopStart=0
LoopEnd=32
LoopCount=-1
Rate=200
Layer=ground
Palette=MYANIM.PAL

[YATECH_A] will now be drawn with myanim.pal instead of the default.
However, AltPalette must be set to no, otherwise this has no effect.

This also determines which palette a structure will load, and it works with theater specific palettes as well.
For instance, Palette=test would load testtem.pal for temperate, testsno.pal for arctic and so on.
Palette=[Part of filename + (TEM | SNO | URB | UBN | DES | LUN)]

Example:
[YATECH]
Palette=MY - Loads mysno.pal, mytem.pal, myurb.pal and so on for each theater.