Calla lilly grow in a multitude of colors. This is Aubergine.
First you make a narrow tube of gumpaste with a 32 gauge wire inserted for the stem. This must dry completely. I then add the pollen with colored sugartex (most calla lilly stamen are the same color as the flower). I then cut the flower petal and wrap it around the stamen.
When the flower is completely dry, I then dust it with the petal dust inside and out. Note the finished flower is a rich deep color. Finally, I wrap the wire in floral tape. This bride is using a silver accent in her theme, therefore, the throats of these flowers are silver.