Thank goodness the bottle of ink only leaked inside of that bag!! The clear liquid had even gotten inside of the bags of paint tubes, the bag of brush pens--on everything. The bottle of green paint (sitting in front of the ink bag) had also leaked and green acrylic paint was splotched here and there.
There was blue paint leaked inside the bag of the Daniel Smith tubes, too.
I finally found the main culprit. This bottle's cap was half off and the bottle is just about empty. Like mineral spirits--for oils. Wasn't coming off well with just water.
Donn--there was a hole in one of the blue tubes of Daniel Smith. You know how they are metal and can get a hole in a crease--well, it had one down at the bottom of the tube and that is where all the blue paint came from. I wrapped and wrapped the tube with clear packing tape and that has seemed to corral it. :)