Measure the cereal into a large bowl or smaller separate bowls if you are coloring them.  Place the powdered sugar in a gallon size zip-lock bag.

Melt almond bark in a microwave safe bowl for 1 minute.  Stir.  Melt for 30 second intervals, stirring in between, until it is all melted and smooth. *if you are making them different colors, you will want to melt smaller amounts.  I used 2 ounces for each color (one square of bark). 

Add the oil and food coloring (if you are coloring them) and stir.  Pour the mixture over the cereal and stir to coat.  (I poured the cereal directly into the smaller bowl since I was doing 6 different colors.)

Pour the cereal into the zip-lock bag and shake to coat with powdered sugar.  Keep shaking until all the cereal is coated and no longer sticky.  I did each color separately and used 1/3 cup of sugar for 1 cup of cereal.  Serve as desired.