I can't remember but I thought I remembered seeing something. Either reiju or the clipboard lad giving judge the deets
I think the chemical sora took gave reiju emotions and went full 180 on Sanji and gave his power boost through his emotions. Emotions are powerful things in shounen.
I think it was already shown in another cover if my memory is correct. I honnestly prefer him with black hair just like I prefer Robin with blue eyes, Fujitora with a purple outfit and Pudding with red eyes.