http://www2.davidsbridal.com/bridesmaids_dresses_express_detail.jsp?stid=402&prodgroup=6

That is the bridesmaids dresses. Pick the apple color and then envision golden weaving.
For Ginny's dress, choose the Victorian Gold and envision apple weaving.

http://www2.davidsbridal.com/bridalgowns_detail.jsp?stid=368&prodgroup=10
That's Hermione's dress, just envision the back corset style with golden ribbons, and picture it shimmering gold in the light.

http://www2.davidsbridal.com/flowergirl_detail.jsp?stid=850&prodgroup=11
That is the flower girls dress.

Hope that helped you a bit!