If you want to see the color yellow or purple jump out at you, just plant a few of each next to each other, the color just pops.
I was reading about daylily fragrance higher up on the thread.
While some do have some fragrance, most do not, and it does take a lot of fragrant daylilies to make an impression as to fragrance from my experience.
Some years back I planted a bunch of Oriental lilies on the outer edges of my largest seedling bed, the Orientals are highly fragrant and permeate throughout the area.
One of the highlights of the summer for me is hybridizing my daylilies in the heady fragrance of the Oriental lilies. I wouldn't know if any of the daylilies in the area are fragrant the fragrance is so powerful.
I'd like to say that it was my master plan of mine having the daylilies and Orientals bloom at the same time, but it was just plain ole luck. :~)