Are you looking for shrubs annuals or perenniuls.

Also, what do you mean by 'colour'. Most shade loving plants are rather pale in blossom or are largely 'interesting leaf' types. Part of my garden faces north (I think part of most gardens face north lol) and only gets a bit of sun in the height of the summer (remember when we had summer?) when the sun gets right round to nearly setting. I've done OK for interest though, if you like small groundling plants then violets are great for early spring and spread like crazy, a lot bigger are helebores which will stand considerable shade and flower very early for long periods but they do like a bit of sun, hydrangeas are big and are shade loving but a lot of people find them boring. Rhododendrons come in many colours and are fantastic but can get huge, hostas don't have interesting flowers but there are so many with beautiful foliage. The list really is endless so you really should cut your question down by describing the type of plant you want.

If you scroll down to the alphabet at the bottom of the page, choose S then click on shade plants or shade containers you can see what other me mbers have been doing........look at some of the other categories too.....beware its addictive Robert........

You could consider these;

Anemone, Aquilegia, Begonia, Centaurea, Convallaria, Cyclamen, Dianthus chinensis,Digitalis, Fuchsia, Galanthus, Helleborus, Heuchera, Hosta, Impatiens Iris, Lamium, Lilium, Linaria, Lobelia, Mahonia,Oxalis Polygonatum,Primula and Pulmonaria.

Teegee has given an excellent list. I will just add that I use hardy perennial geraniums a lot for these sorts of areas.

Yes Inverglen. Since I became hors de combat (which I think is French for an aging crock) a friend has been doing a lot of gardening for me. Her view (and she is highly qualified in horticulture even if she is Australian - lol) is that if you just want to fill in a difficult area, use geraniums. I think I have about 8 different ones, some even in full sun. If anybody wants a division then pm me. White, pink, blue, magenta, purple etc.

I have some variegated London Pride that light up dark areas, and hardy Fuchsias do surprisingly well in shade.

And my trilliums and helebores and peony roses do well to.

And heucheras as Teegee as already said.