That is a beautiful sight, what fantastic containers. I went to the Chicago area just after Christmas last year and some of the winter container arrangements were like those in the site.
It is hard to find fantastic ideas for containers, I buy so many magazines and books on container gardening, just disappointing some times.
Will keep an eye on this thread. My 2 cents, go with foliage variegation and less flowers. Anyway that's what appeals to me.