Why is my Cauliflower Turning Purple?

Normally if you plant white cauliflower and it starts coming up and turning purple you might think there is something wrong with the plant but to be perfectly honest there is purple cauliflower and it is good to eat as well. If it is white cauliflower seeds you purchased and that is what is not growing then when you purchased them at a garden store sometimes the seeds will be missed mark it does not mean you purchased a bad package of seeds.