All you need is:
Mason Jar (clean and dry)
I started out by selecting my color, I chose red because we are having a lady bug party for our little one.
I added a tablespoon of glue (this did three mason jars) and four drops of red food coloring.
You can experiment with the amount of drops you want, (or which colors, I heard its best to mix blue and green to make that vintage blue color).
I ended up with some awesome pink/red mason jars.
The only down side to this project is that water makes these jars loose color (though the longer the glue is on the better it stays)