Flowering shrub for a pot?

[WellVersedInEtiquette]

I've a pot in the garden that I normally stick geraniums or petunias in. I've debated putting a dicentra in as the local garden centre has red ones in!
Dh has asked if there's any flowering shrub we can put in instead so that we have colour through the winter. (The green leaf rather than a flower)
Has anyone got any idea?

Camellia ? (Not sure if I have spelt that right)

Or if it’s a small pot - some heather ? :)

I like a dwarf lavender, personally. It is green of leaf, but a lot of them are silvery green, which is rather pretty. And, they smell nice, & attract bees etc in summer. I have this one, it's a nice pot variety.

Try looking at these?

www.rhs.org.uk/plants/articles/graham-rice/shrubs-and-climbers/10-agm-shrubs-for-containers

Viburnums are lovely evergreen shrubs, I have one in a planter that is currently in flower and has a fantastic scent.
Other varieties will flower at different times of the year.