Tie dyed fondant is a bit tricky. No two pieces will ever come out the same. The fondant is more marbleized than Tie dyed. I suggest getting a few colors of fondant you would like to use and placing them side by side. Roll the fondant in a ball, cut that ball in half once or twice and place it side by side again. Now roll the fondant in a ball again, than roll the fondant flat to the thickness that you need.