50 shades of carrots

I picked carrots from the line that's supposed to have white carrots in it and got a variety of colours. The pure white ones are generally practically inedible, they're so tough and scrawny. I got the seeds form the allotments where I did my course. They'd produced them themselves. I suspect their white carrots of having mated with orange carrots, hence the variety of colours. I might give it a go from the seed they look like they're trying to produce themselves this year - some of the carrots from the line decided they were annuals not biennials (=flower in the 2nd year) and bolted, so I may get seed.