So we know that sanji was unaffected by the gene mutations, but for the sake of speculation, what would his powers be if he had them? it is very possible that sanji will go the rest of his life without ever unlocking his powers, and rather focus solely on his flame abilities and the abilities of the raid suit, but the idea of sanji getting a power up that changes the color of his hair bears a strong resemblance to a power of another series Spoiler Given how dragon ball was a big inspiration for Oda, I think there is still some possibility that sanji does have the potential to unlock his genetic mutations. So what exactly could they be? whatever it is, here's what we know: it would have to be thematically related to the color black, as sanji is stealth black it would have to complement the invisibility of the raid suit it cannot be invisibility* *the reason for this is simple. The suit itself offers invisibility, why would judge give Sanji a power that his suit can already offer? On top of this, it should also be a power that fits with Sanji's theme and style. It should also be important to note that many of Sanji's powers were foreshadowed by the enemies he's fought in the past Spoiler pearl's flame abilities foreshadowed DJ Bon clay foreshadowed the time skip training kuroobi foreshadowed sanji's blue walk Jabra's rokushiki foreshadowed sanji getting geppo absalomb foreshadowed invisibility judge foreshadowed sanji getting the raid suit So what could black haired Sanji's abilities be foreshadowed by? Well for one, and most obviously, Vergo. Vergo with his tekkai and powerful CoA would obviously foreshadow the exoskeleton, but beyond that I see it being foreshadowed by: Bon Clay Page One Law(Law did clash with sanji in PH when he did the personality swap) what power do I see him having? Transformation transformation would be the perfect power to complement stealth black. Stealth black is a ninja, a stealth master, what better power than one that would allow the user to infiltrate the opponents and gain intel from them. but this power also has immense offensive capabilities. I see Sanji using his transformation ability to access a new form in which he has a demon-like physique. This would be somewhat similar to Page One's hybrid, albeit sanji would look a lot more human like. Spoiler I believe this was foreshadowed in thriller bark. In addition, this power would go with the color black as demons are associated with that color and it would fit Sanji's theme as sanji has always had a demon theme to him. if black haired sanji really is a thing, I expect him to have an appearance towards the end of this arc, with it being sanji's main power up that will help him beat queen(or weevil or whomever). I see Sanji accessing this power up, either with help from judge or possibly vegapunk(who was hinted to have an appearance this arc by Cipher pol's conversation with Orochi).