I managed, in a fit of spaz this morning, to put an uncapped pen in my Bag of Holding, which is made of light brown hemp material. There is now a large blue spot in the bottom corner of the Bag of Holding. A soak in the sink and a trip through the washing machine has lessened the stain, but only by a bit, which leaves me contemplating dye (which, really, is fine; a black bag will show dirt a heck of a lot less than the current color.) Has anyone ever dyed hemp material? Anything I should know before I take good old Rit to it? Is dying a bad idea, in which case, I will resort to plan B, which is a very large button?