Cottinus coggygria ‘Royal Purple’ (Smoke Bush)... considered a tree but I grow it as a shrub, whacking it back hard each spring to keep the height lower and make it bush out. easily grows 7-8' tall in a season. glows purple with the sun behind it.
Golden Lights Hardy Azalea cold-hardy variety successfully withstands harsh temperatures down to -30 degrees F! Covered with bright yellow bloom trusses in late spring. The attractive dark green foliage turns various shades of red during the autumn months. Does best in full to partial shade. 3-5 ft. tall shrub has good resistance to mildew, pests and disease. Potted plants. Zones 4-8. Zones: 4 - 8. Hardy to -30° F. Height: 3 - 5'. Shade Requirement: Full shade to partial shade.
*Boxwood 'Dee Runk' is reportedly the nicest of the columnar boxwoods tolerating shade and clay soils. Total height of 8-10 ft tall can be sheared shorter. Max width about two feet. Advantage over other upright boxwoods is dense growth that won't flop open. Will fit nicely next to the porch stairs and in the corner by the garage.
Beautiful, colorful landscaping! The tall grass is purple fountain grass (Pennisteum sectaceum 'Rubrum'), available from bustaniplantfarm.com (image credit). Looks like coleus and purple heart, and maybe begonias?