I've been in a production mode in my studio lately. Creating colored backgrounds that I'll add tangles too later is so much fun. This group was done with my Tombow markers using a watercolor wet into wet technique. I blogged about this once before at http://suejacobs.blogspot.com/2011/05/colored-backgrounds-with-tombow-markers.html . The twist here is that while the tiles were still very wet, I dropped a few crystals of sea salt onto the surface. As the tiles completed drying, the salt created these lovely marks.