Calla lilies come in a wide array of colors viz., shades of green, pink, purple, yellow and orange. 
In fact, they are not a calla, either. The calla lily belongs to the genus Zantedeschia and is a member of the Araceae family, along with the caladium and philodendron. It is also known as the pig lily, trumpet lily and arum lily, and begins to blossom in late spring. This flower was first cataloged in the mid 1700s. Calla Lilies are very popular for wedding bouquets as they signify magnificence and beauty. Calla lilies are one of the most beautiful flowers with a unique flower form. Calla lilies come in a wide array of colors viz., shades of green, pink, purple, yellow and orange. Callas are also known by such other common names viz., arum lily, trumpet lily, Pig lily, or Miniature Calla Lily. Dig up some dirt on calla lily, the flower with the exquisitely elegant bloom. This floral favorite boasts a host of interesting qualities and facts. First of all, despite the name—calla lily—this plant is not a lily. Botanically, calla lily plant is Zantedeschia aethiopica. ENHFL04-001 Warm Climate Production Guidelines for Zantedeschia 3 the spathe, which is the colorful modified leaf, and the spadix, which is the central column containing the male and female flowers. So the colorful part of the bloom is the spathe and the spadix is usually yellow, but may be white or red toned as well. Overview. The calla lily is not a true lily, yet the flower is also not a calla, rather, it is part of the genus Zantedeschia. Calla lilies are grown from rhizomes and bloom late in the spring. The calla has been called many things: arum lily, trumpet lily, pig lily and the tantalizing water dragon. The calla lily belongs to the genus Zantedeschia and is a member of the Araceae family, along with the caladium and philodendron. It is also known as the pig lily, trumpet lily and arum lily, and begins to blossom in late spring. Call lily colors. Calla lilies are commonly white, but they also come in a variety of colors, including yellow, pink, green, purple, orange and black. The colored varieties are called mini calla lilies, and each carries a different meaning. Genus: Zantedeschia. The most familiar calla, this 3-foot-tall and 2-foot-wide plant has large white flowers—up to 10 inches long—that surround a creamy yellow fingerlike centerpiece. They bloom from late spring to mid-summer. The upright, arrow-shaped leaves are solid green and glossy.
http://www.teleflora.com/blog/what-do-calla-lilies-represent/ http://www.theflowerexpert.com/content/aboutflowers/exoticflowers/calla-lily http://www.hgtvgardens.com/flowering-plants/calla-lily-flowers http://hort.ifas.ufl.edu/floriculture/pdfs/crop_production/Callas_ENHFL04-001.pdf http://www.gardenguides.com/77543-meaning-calla-lilies.html http://www.teleflora.com/blog/what-do-calla-lilies-represent/ http://www.teleflora.com/blog/what-do-calla-lilies-represent/ http://www.finegardening.com/white-calla-lily-zantedeschia-aethiopica
what are the colors of the Zantedeschia flower