I have never seen tan stone dust anywhere, but you might want to try mixing cement stain in a wheel barrel. Add cement stain to watered down stone dust mix well. Drain off water/cement liquid to use again.A paint store may also know about paints that might be mixed in cement instead of just on it. It is worth a try.
Let me know if it workds for not.

blacky1

I think this is very regional. I'm in California--and tan (clay colored) stone dust (which we usually refer to as decomposed granite) is the standard. In fact, I had to do some real searching to find GRAY stone dust!