Thanks for writing! We have a great resource on line to help you pick plants --- it's our new Plant Encyclopedia. Check it out at: http://www.bhg.com/gardening/plant-dictionary/
This tool will allow you to search for annuals for part shade. You can even search by bloom color or plant height, fragrant flowers, plants that attract butterflies, and other features!
I hope this helps. Good luck!
Senior Garden Editor, BHG.com
Better Homes and Gardens