And some day the carrot will not be distinguishable from the radish. Poor Bugs Bunny.
THe whole orange thing came about from a few farmers trying to impress their local lord by breeding orange carrots. Orange being the family colour of say family. The trend caught on and so we now have orange carrots.
You can still get purple carrots, or at least the seeds to grow them
You can buy purple carrots from organic food stores, or suppliers such as Able & Cole.