Lesson Learned: Don't try to initiate a boop with your human on hair dye day!
I was pinning some fabric, which was large so laid out on the floor, and suddenly I feel a boop! Fortunately, this is a non-bleach, vegetable-based dye and so wasn't a danger to the little man. Most of it came off...but he does have a little blue smudge on his nose which will hopefully wear off in a day or two. A lesson to me and to him!