I was looking at Mig Ammo's North African Dust or Sand. Do I need one or both? Does the fixer matter? I've seen people use water or enamel thinner.
Mig has had so many pigments hard to keep track really.
First there was Mig Pigments, then there were Ak interactive pigments, now Ammo from Mig.
I still have quite a few original ones.
But back to the question, yes and you can look on the web Vallejo makes some also,as I think they were the ones that made the original ones anyway, plus a tad cheaper then the others.
Never go wrong on pigments, as can also be mixed and make your own colors, if not try pastel chalks as we did back before all the pigments came about, still an option,you I bet can mix them with the bought ones and move your color anyway you see fit.
Does this help?