Heucheras!
Or a lawn?

Ornamental cabbage has gotten me through to early winter with some color. After that, all I could think of was planting anticipation of spring in my head.

Feb to april....spring bulbs + spring bedding (pansies etc)
April to may....Wallflowers
May to end Oct...mix of herbaceous perennials and summer bedding
Oct to Feb....foliage shrubs such as fatsia, Phormiums and winter bark colour.

The old favourites Euonymus fortunei in Gold and Silver along with heucheras

Hurray, that's what I was thinking of as well. Put some tulips in between.

That's a great idea Sue

There are a couple of berberis - Sieboldii and Orange Rocket - and, if you can find it, Mahonia Moseri which have good foliage colour changing through the seasons from bright green to red. With flowers and berries for added appeal.
Try an Internet search for "year round garden colour"
Do you want shrubs that change through the year or a selection of different plants with seasonal interest?