Also called love-in-a-mist. It’s a lovely annual. I planted a variety pack several years (a couple of decades?) ago. I’m pretty sure the seed pack contained white, blue, indigo, pink flowers, and maybe lavender and indigo. I don’t recall if they were just doubles or singles and doubles. They have faithfully reseeded, turning my front yard into a nigella meadow every spring. I no longer have pink, indigo, or lavender flowers, but I have varigated(?) blue and white, as well as blue flowers and white flowers. Oh, hm. I just looked up nigella at my favorite seed company: Territorial Seed Company. The variety available is Persian Jewels which has varigated blue/white flowers. Perhaps that was the seed mix that I used.