No dude, it is the same shit.
Sanji always used that, Oda just didn't want to show because thats the way he choose to draw Sanji. Look at Vergo during Punk Hazard, he supposedly had Haki on his whole body, but his gloves were not shown with haki on full haki body mode, while it was shown on many other scenes, his legs also didn't show CoA during full haki body mode. Oda's inconsistencies were always there anyway
Luffy said Zoro and Sanji and himself could use haki, he didn't said "Only me and Zoro can make our bodies black
"