Non-Skid Wood Floor ?

[ahnutts!]

I recently put new wood floors in my saloon and V berth. I finished them with spar varnish and would like the same look in my aft cabin. The problem is that a large portion of the floor is angled to accommodate the shape of the hull. So I am wondering if anyone has any experience with a non skid products that would give enough texture that I can safely walk on it, and still have the look of varnished wood?

Thanks
Jerin