the only thing i can think of to use as and example is the buster sword. the buster sword uses 2 files which i think is rtad and rtck. i know one of the files for ultima weapon is rtcz, i just dont know what the second one is..
I believe he means, and I might be wrong about this, is the shading effect on the sword when his HP goes down. I don't think that's a texture change, though. None of the weapons are textured at all.
no i mean the part that would the material of the sword(like making the buster sword look like mettle instead of just white). like the tga files for kotor that you can open with paint.net.