The picture in the bottom right is a reverse colour effect from Picasa. Which makes me think... It could be interesting to try this on black paper. I know that's been mentioned in the Gelli-sphere - I won't pretend to be an original artist! - and I must explore that further. I have some dark papers in that Dealz set, begging to be put to good use. Maybe next weekend - bank holiday weekend - in between visits to Deer Park and Marlay park with Timber!