I should have looked for reviews first - I already ordered some roller pens and highlighter pens. Oh well, you can always use pens around the house if they don't work out for quilt marking. There is never a pen around when you need one, is there?
But anyway, when I read that the ink color comes back, it occurred to me that you could write a message to future generations on the quilt, "I pray that you are never cold enough to read this." :)
I'll try to come up with something wiseacre.
Leave hidden messages for the grandkids and great-grandkids.