I recently found April Dawn Camellia, it's new to me. I was shocked when I saw the flower on this one. Each plant could have white, red, or multi colored flowers. It grows very healthy and slow in a nice shady spot and can survive zone 6 cold.
There are several zone 6 Camellias that can handle colder temparatures. April Dawn Camellia is one of these and has multi colored flowers in pink, white, and/or red. Be sure to use a well drained soil medium when planting any Camellia as they prefer fall planting with less watering than you might think. In NC our soil is clay so we prefer to use pine bark soil conditioner when planting Camellia, Rhododendron, Mountain Laurel, and Azalea.