I so want to make some of these. I am pretty sure you can get the chemicals to make the oils and wicks on the cheap over the net. I'm guessing the 'metals' that they use are Copper Chloride (green), Sodium Chloride (Yellow/Orangeish) and Strontium Chloride (red) Potassium Chloride (purple) and Cupric Chloride (blue).
Oh look here are some prices on the elements and even instructions on how to burn this shit in your fireplace, which I assume means 'neighbors front yard'.
BUY YOU CHEMS + INTRUCTIONS
NOTE: Do not put these chemicals in your weed to spark and see the pretty colors. Just FYI.