Never say Dye
Andy Warhol LOVED Campbell’s soup. SO much so that he would routinely eat it right out of the can. Furthermore, he started dyeing his hair grey when he was only 23, saying “When you’ve got gray hair, every move you make seems ‘young’ and ‘spry,’ instead of just being normally active,”
...and Tesla, too
Edison never said that about salt.
That was J.C. Penny, who used to take jr. executives up for promotions to lunch and watch whether they seasoned their food before eating.
His belief was that they wouldn't be careful in company decisions if they acted impulsively at simple eating decisions.