I have Caryopteris 'Sunshine Blue' and Deutzia 'Chardonnay Pearls' getting afternoon sun and the yellow foliage really glows. Both are protected by the garage on the north side though against most of the winter wind. Check the cold tolerance on the first one though. They both survived the two horrible winters we had. The Caryopteris does self-sow in both the yellow foliage and common green foliage which can be a plus if you like the shrub. Weigelas are nice too with several different colors of foliage and flower. Some will do a sporadic second flowering after pruning.
