Syringa pubescens 'Miss Kim'. Not usually on a fall colour list. But I love the contrasting, almost black foliage against all the oranges and reds. This plant is great because it's nice and compact. Slowly growing to about 6' tall by 4 or 5' wide. You still get the sweet fragrance of lilac flowers in spring along with this cool fall interest. Easy to grow, loves sun, and doesn't need a ton of water. It gets bonus points for it's name too, my wife's name is Kimberley!