I keep thinking I will have it all figured out by bloom time, color, etc. But then I get a suprise box or two, or another order, or the beds aren't ready when the iris arrive soooo I have organized chaos. Each section is a mix of colors but I make complimentary groupings. For instance, I put a section of red, white, and red and white together with dark purple and blue selfs leading into the next section. I also put my Dragons together, and I have a good concentration of space agers in my Spoon Bed (mostly Burseen's).
I always have my smalls to the front. Again planted as complimentary colors. In the Spoon Bed they are ones that fit, like Inner Space, and Bermuda Triangle, and Viper, with exceptions of course.