Corydalis temulifolia ‘Chocolate stars’
Gardens Illustrated magazine describes it this way: “Wonderful crinkle-edged, rust-coloured foliage in winter becomes almost orange in March. By April, lavender flowers deck the now bronze leaves. The whole plant gradually fades to olive green by June and sits unobtrusively in the garden until November when the first frost knocks back the green leaves and reveals the new rusty leaves emerging from below. It is a sight for sore eyes in February.”
I think that sounds just divine.