A couple of years ago now (back when I was DTing for Simon Says Stamp), I bought (well, ordered) a massive Unity stamp set - the Brave Girls Club one, and never really used it. I was having a play with some of Sheena's older stamps, painting directly onto the rubber with Twinkling H2Os and stamping onto old book pages, and I thought that the Brave Girls stamps just worked perfectly with the background. I possibly used the wrong ink - the Memento didn't work that well over the painted areas, but I went over it with a black pen afterwards to sharpen it up. I think that Archival might have worked better.