Hey Pepop!
Just today I received two jars of "Clear" so I can try some of these recipes.
Your photo of "Gray Stone" just blew me away and that is the first one I tried.
Sadly, mine did not turn out like yours... almost no black mottling, just a very nice "gray" - -
which I can use, don't get me wrong.
After combining the three ingredients, I made sure to shake-and-roll the jar even more than I do
a new color shipped to me.
I know that you use Rosey's colors - - is that Sky White different than Pro Tech's White?
Maybe that is the problem.
I think I will add a bit more Black to my mix and try again...
What do you think?