Princess maker refine (help required)

[TSCOCT]

First of all, excuse me for my broken english.

Second, i recently decided to rip some graphics from Princess maker refine (i've heard it's somewhat complicated)
and, i've actually made some progress in this

I used HEX editor to extract data from files listed below.

this is what i've got so far:

mk17_04.maa 

i guess, this is a alpha mask for one of daughter's sprites from 17 years
(darker colors mean less value of alpha, i think)
also, it's mirrored vertically, for some reason


e3_03m.maa

alpha mask for warrior, i think

so, i guessing that these files:

are alpha masks.


so, i don' have idea, where palettes are stored.

I think they are here:

but i'm not sure.

Can anyone suggest me methods of extracting palette for sprites?

UPDATE!
Accidentally put pm_big.data in pascalABC and found some "IHDR" written everywhere!

after some googleing, it turned out to be chunks (or something) for png files!