is there a way to change it?
Here is how you change a pallette that you see in VBA. Each color is two bytes. So, make note of the memory location of the first pallet. In this case, it is 0x05000020. Now, open up the VBA memory viewer and go to that offset. Type the next 0x20 (32 dec) bytes you see in the memory viewer into the search function in HxD and search for them. Sorry, no copy amd paste in the memory viewer. Then, the location of the first byte of your pallet is the location of pallette in APE.
I just found the pallette myself, however I will put it in a spoiler so you can cross check it yourself. Find it on your own, don't cheat!
Now, open up that location in APE and edit it!
How can I remove the claw's animation, that is the same of crush claw? I tried to find the same code of crush claw, but there isn't... How can I do this...?
Well, from what I have seen, we don't know a ton about graphic movement on the screen. However, my best guess would be to find the graphic for the claw in unLz and make note of the offset. Take that offset and turn it into a pointer and see if that pointer is in your animation. If it is, then that is definitely the section which has the claw animation. Remove that section and play around with the sections around it until it works.