Once the glue has been removed, you could over-dye it with a second color.
Originally Posted by Rose_P
Here's something I just stumbled on that might be useful to quilters. I think if I were doing it I would search this site for a better way to stabilize the dye. She's after a watermark look, which is necessarily pale, but most of the time quilters will want something more permanent, and perhaps more intense. Others have discussed dying techniques, but I haven't found this particular one.
http://www.u-createcrafts.com/2011/0...-by-sweet.html
Have fun!