north side of the fence....

I have a long, thin flower bed that is on the north side of a tall fence, so it never gets direct sun. There are a few lilac trees growing, but they look somewhat sickly, and I may remove one or two of them. I wanted to make a very well-designed annuals garden... I want white and red as the colors.
I was thinking of using impatiens to make sort of a draped design (kind of like the design on wedding cakes). The problem is that the outer foot of the garden gets nearly full sun, so I don't think impatiens would work. I'm attaching a very pathetic diagram of the kind of design I would like - the green circles are the trees that are already there, and I used a gray spray to show where it's shady. I wanted to use maybe 3 types of plants (one for where the red is, one for where the green is, and one for the front). Does anyone have any ideas?

I have used the below method:

http://img.photobucket.com/albums/v345/kdjoergensen/gardening/garden%20photos/Dscn8321.jpg

Impatiens are in shade, but wave petunias are planted on the corner in full sun.
For some reason I can not upload pictures (keep getting the dark 'x') but click on link to see picture.

Kenneth

Kenneth, nice picture. How did you keep the Caladium and EE survive NJ winter? I love them a lot, but don't know how to overwinter them.
Fang

for the green line you could use something like mondo grass that doesn't care if it's shady or sunny, it would make a good strong line too

I'm not sure you'll get an annual that will do shade and sun at the same time. You might have to do something the same color but different plant in the front of the bed. Like the petunias idea.