One to consider is the purple leaf sand cherry, P x cistena Crimson Dwarf. Its bright reddish purple leaves keep going all summer before turning a greenish-bronze in autumn.

Thirty and 40 years ago the hot shrub was purple leaf sand cherry (Prunus x ‘cistena’). At the same time, Euonymus gaiety (Euonymus fortunei ‘Emerald Gaiety’) was wildly popular.