Wow that was super thoughtful of you to test it and do a little write up for us. I have only used the white and the purple that dries clear. The purple is mostly in glue stick form but I did have a tiny bottle of it too. I also had the same results you did with the purple that dries clear. Washed out completely with no residue or staining. Usually at back to school time you can find the huge jugs of the white washable school glue at Walmart.