Q. My daughter has a grey rain coat that when it gets wet in the rain, has a pattern of black flowers that become visible, and goes away when it dries. Can this be worn on Shabbos? Are the flowers becoming visible considered painting or dyeing?
A. Horav Shlomo Miller's Shlit"a opinion is that if you wear the coat without specific intention of the fabric changing or showing hidden designs when it becomes wet, it is permitted to use on Shabbos.
Rabbi A. Bartfeld as advised by Horav Shlomo Miller Shlit"a