A Brown......I happen to have a set of N frame square butt targets that are, shall we say, "modified", and may suit your grip needs as Green Frog suggested. I bought these grips at OGCA about 18 months ago. Someone got halfway through trying to sand the checkering out, and recontoured the speedloader cut out a bit.

I picked them up, finished the sanding and put a few coats of lacquer on them. They really don't look too bad but I haven't really found anything to put them on and they're just laying in my "extra grips" box.

Let me know if you're interested.