Knock Out has two color sports, or mutations, Pink Knock Out and Blushing Knock Out. Blushing is light pink. The white I have not seen or heard of occurring before. Knock Out, Pink and Blushing will also occasionally show blooms that are bicolored, light and dark, or striped, the sports are unstable. Mark the canes with the bicolored blooms and see if the bloom color repeats. If it does, you may have another sport.