Put here:

background.bmp -> uncompressed bitmap of 4,8,24 bits (it is resized to 256x256 pixels internally)

neck.bmp or neck0.bmp -> first customizable neck texture (resized to 64x256 internally, same colors of background.bmp)

neck1.bmp -> second neck texture

neck2.bmp

......
......

neck10.bmp 

....
