Have you suggestions on colourful plants and shrubs that grow in shade? Kirk Kuntry of US/Canada

I am building a cypress cabin in the woods with lots of shaded areas, I want lots of color besides the cedar trees that surround my place. (tired of year-round green). I plan on thinning out a lot of the cedars but still little light will filter thru. Suggestions on colorful plants, shrubs that grow in shade (partial sun). Soil type 1/2 & 1/2 top soil mixed with lime. I am most positive that I will have to bring in lots of top soil but I am willing to take the time & work hard – I am a outdoors type of person.

Forum (Brian): Hi. Kirk I asume you are in the northern staits of the U.S or in Canada. If I have it wrong let me know. Therefore I have chosen plants that should work in planting zones 3, 4, 5. although care will be needed if you are in the northern areas of zone 3. Your might also like to look out for :
Lois Hole’s Book. Favourite Trees and Shrubs.1997 ISBN 1-55105-081-01
Simon & Schuster’s Guide to Trees 1977 ISBN 0.671-2425-PBK
Sunset National Garden Book ISBN 0-3760 – 3862-4
Or even my own title
The Gardeners Essential Plant Guide 1997 Brian Davis Published by Laural Glen ISBN 1-800-284-3580
The following are a number of ideas you could consider. The chalk is a problem and you must stay away from any plant that is not lime tolerant Grow up in to the trees to display autumn colours and to achieve this I would look for the following:
Vitis Brant
Vitis Coignetiae
Celastrus orbiculatus
Wisteria (In most sunny spot)
Clematis Montana varieties
Rosa ‘Fillips ‘Kiftsgate’
Rosa ‘American Pillar’
Depending on the soil carpet, you could look to planting many different spring flowering bulbs.