The colored varieties are called mini calla lilies, and each carries a different meaning. While white naturally says purity and innocence, pink has a connotation of admiration and appreciation. Purple, which is often associated with royalty, denotes passion. 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, orange and more. Callas are also known by such other common names viz., Calla lilies are excellent houseplants, best for beds, borders, bouquets and flower arrangements.Calla Lilies signify magnificence and beauty. Further combined with the attributes associated with the color you choose, Calla lilies can convey a wealth of meaning.About the Calla Lily Flower and Plant Calla lilies have long-petioled, basal leaves arising from a thick rhizome. The inflorescence, on a leafless flower stalk, consists of a spathe and spadix. The spathe, a large, flaring, trumpet-shaped bract, surrounds the spadix which is covered with tiny flowers.Calla lilies average between 1 and 3 feet high and have a diameter of approximately 1 to 1 and 1/2 feet when fully grown. The Calla lily leaves are 1 1/2' long, rich green. The green leaves of the calla lily are shaped like arrowheads and have white or silver speckles.