I started by filling foil pans with hot water and adding food coloring to create varying shades of similar colors. I created three shades of yellow/orange for my yellow flowers (since I wanted them to look more natural) and three shades of blue/violet for my blue flowers (so they would look a little more funky and colorful). I found that adding a little splash of vinegar to each pan helped the filters to take on a more intense color. I dyed about 15 of each color at a time.
Each completed flower will use five coffee fiters: One of the darkest color (for the center of the flower), two of the mid-range color, and two of the lightest color (for the outer petals). Fold and cut as shown above. You will also want to cut a tiny bit off of the bottom folded tip to create a small hole in the center of the coffee filter (this is where you will insert your floral wire or skewer).