I happen to have about a flat-rate box quantity of Irises that I dug from along my fenceline this summer. I put them out by the road with a sign *Free Irises* -- and no one took them. I can't tell you what-all is there because they didn't bloom this year. But I did have an assortment of colors out there originally, so assume that these would be an assortment of colors.
You're welcome to have them for the cost of shipping, if you're interested. To guard against having all the same Irises in one location, I'd buy assortments from several locations and then some from each in each section. You're bound to have mixed colors that way.