butterbreaking instant crossholes from hallugenorific disorientation man dude I swear

[Davy Jones]

You can change his palette (upper/lower body) in the main menu. The palette you have right now is a custom palette which I've used in my entire playthrough (I never changed it, because I liked this combination the most).

Concerning the swords:
I don't think you can assemble the swords and the sprites together, the game handles them as separate entities. I would hard-rip them and since there are only two variations (stabbing & swinging + frames from using magic), it shouldn't take too long.

Here you can see how some of the sword frames look like when magic is used:
https://www.youtube.com/watch?v=6DHQEmIMvlk
Never had a thing for this kind of combat, though. Nevertheless, one of the last saves should have more than enough material to get any flux stone combination you want.