My sense, from exploring that website is that the color of your gray depends a lot on how much of your natural color you still have. If most of your hair is without pigment, you'll have whiter hair. Shades of gray result more from non-pigmented hair reflecting underlying colors. So right now, since I still have a lot of my natural dark ash blonde, my hair looks a bit faded - the result of scattered grays throughout. And I'm okay with that.
2Poodles Southeast PA
fine, med porosity, normal elasticity
Currently using the following 2 - 3 x/week:
Living Proof Perfect Hair Day suphate-free Poo, cone-free CO and styling treatment, plus KCCC