I mixed up a collection of coloured carrots and got them to cross, and grew out the F1 seed last autumn. This gave a range of tinted carrots, mostly pale with some purples mauves and pinks. All the coloured roots were dug up and planted in a small tight patch, along with some French Rounds in an attempt to get some crosses between the coloureds and the rounds. And a couple of Baby variety, from a restricted self seeded population that were in the garden got into the mix as well, just to add a bit of diversity. I also planted a shop bought deep purple carrot. I tried to keep a bit of order to the plantings but they did get a bit mixed.
These have all gone to seed over summer, and I've sorted the plants according to root shape and depth of remnant colour - in some cases its difficult to tell what the original carrot was like, but I've given it my best shot.
Carrots produce a lot of seed. I don't know what I'm going to do with the excess. I've only got room for a fairly limited growout, so I will only be sowing seed from the more deeply coloured roots, and some of the French rounds. That leaves heaps of potentially crossed up seed, that I don't have the room for.