I am in love with the Somerset Studio avacado dyed hearts shown below.
I tried avacado dying a year or so ago and it was a dismal failure and I am not willing to go to all that trouble again to colorize a few paper hearts. So I used watercolors on cut out hearts. This is the tray (Cool Whip lid) after I picked off the hearts. Now perhaps if I lay some tissue paper on it and give it a spritz, it might transfer the hearts. Hmmm.....