Mixed Container Solutions - Ive Got Rhythm - This is a great site. It shows a variety of container ideas for every light situation and then gives the information for all of the plants in each container.
"This is a simple yet dramatic pairing for a shady spot- with just two plants (each with two leaf colors). Caladium 'Gingerland': B. Coleus (Solenostemon 'Inky Fingers')" Note: coleus is too wussy to survive winter outside.
This planting grows best in sun or part shade. Alternanthera 'Red Thread' -- 2 B. Million bells (Calibrachoa 'Million Bells Terra Cotta') -- 3 C. Summer snapdragon (Angelonia 'AngelMist Deep Plum') -- 2 D.