I used Kato track and ballast on my previous layout in Mechanicsburg. Alot of it was the double-track with concrete ties, which I painted.
In the not-so-great photo below, there is a short section of the double-track adjacent to the RS-2, but the sections leading into it and out of it are single-track pieces with Kato ballast in between.
I may still have some of it. If I can find it, I'd be glad to send you a sample for comparison.

Ron