Create your own dip dyed shoes. You don't have to particularly use yellow dip-dye. I've tried this myself, and I dip-dyed my shoes blue and green instead. It really works! Make sure you have white shoes only, or else it won't work.
Pull up the threads from their loose ends. I must stress this: use ALL of your might without breaking the threads to tighten up, scrunching your piece into a tiny, tight mass. Otherwise, the dye will be able to seep in and you won’t get a clear pattern.