Add me to the list of Costco button-down fans. I was already buying the Kirkland (store brand) no-iron shirts for my husband, and I spied some nice button-downs for women in the store recently (colours like lemon yellow, coral, a nice bright punched-up lavender colour - not pink, not lavender, not fuschia either, some combination of the three). Good quality shirts and they do have some nice colours in-store right now.
Alternatively, Eddie Bauer has some nice no-iron button down shirts. The colour selection is kind of seasonal, and it's true that at this time of year, the colours are kind of Easter-Egg-ish, but still - this is a good shirt. I bought teal in the fall, and it's a great shirt all around. You just need to jump on the shirt when you see it in a colour that you like. In the meantime, this is a well-fitting shirt and not too boxy, imo.
http://www.eddiebauer.com/cata.....&pg=1
These and the Kirkland shirts from Costco come out of the dryer looking like they've come back from the drycleaners. I have the Eddie Bauer shirts in french blue, white, teal and a kind of berry colour. I don't normally buy Eddie Bauer shirts in spring/summer, but their fall colours and neutrals are pretty good.
What kind of colours are you looking for Rae?