To make the blue glitter above I used sea salt and mixed in a few drops of blue food coloring. I then placed the salt on parchment paper on a baking tray and cooked at 350 for about 10 minutes...where in I discovered that the yellow, sugar based glitter had turned into ribbon candy and so, nervous, I took both sets out.
The yellow was malleable while it was still hot, and so I bent it a bit and eventually, as it cooled, I broke it apart and stored it in a little tubby.