Does anyone have some examples of DOS on a dark colored soap they could share? I haven't been able to find any online regarding what it would look like on say a black or dark brown soap. I saw a couple spots of DOS on soaps I made in December, but all of those soaps are light enough to see the spots on them. I have a couple of dark colored soaps from that same time and want to know what to look for (if DOS shows differently) as time goes on. Thanks!