To remove dye transfer from blue jeans simply buy the Mequiar's Quick Interior Detailer Cleaner spry. Sold at Walmart or auto parts stores for about $5.00, 16oz spray bottle. Perfectly safe for all interior cleaning, will leave the surface as origional, leaves no shine, etc. effects.
Simply spry it directly on the blue jeans dye area wetting nicely the area, let sit for 10 seconds and using a clean terry cloth rub back and forth firmly, rotating the cloth. Maybe repeat a second time.
I have been using this product for quite a while. Also has a very nice new car smell that will disappear in a day.