If it existed I would suggest "Conifers are the Cure". For those that haven't been smitten or bitten yet, but want more landscape interest the world of evergreens awaits. The range of colors (gold, blue, lime, silver and more), forms (columnar, weeping, globe, pencil point and more), needle textures and often wonderful cones is far broader than you might think.
For example: Blue spruces come in different shapes. Love the powder blue color of 'Fat Albert', but lack the space for a 30' tree? Two dwarf forms are popular and readily available. 'Globe' blue spruce exhibits the same intense color typical of the best grafted blues, but with a flattish top, maturing at 5' tall and a bit wider than that.
|Globe Blue Spruce|
Need another true blue option other than spruce? Pictured below is a Dwarf Blue Concolor Fir (Abies concolor 'Glauca Compacta') . The color is certainly equal to any blue spruce, but the needles are velvety soft to the touch. It withstands temperature extremes and drought, but only reaches 8' tall, with a space-saving 3' girth.
|Dwarf Blue Concolor Fir|
Norway spruces, with their dark, dark green needles come in all shapes and sizes including weeping, too. Again, like other weepers variability is to be expected. Norway's do tolerate shade, if they're forced into that situation. The dark color on such an architectural specimen arising from winter snow is pretty stunning.
|Weeping Norway Spruce|
Similarly height-blessed, but width-challenged, is the wonderful Weeping white spruce (Picea glauca 'Pendula') pictured below. This is a great plant to break the strong horizontal lines of a ranch house. Always a predictable pencil-pointed, silver-gray specimen, pruning is never needed. This shape is just genetic destiny. Like most conifers more sun means a fuller, denser plant.
|Weeping White Spruce|
Do take the time to explore all your options beyond arborvitae, yew and blue spruce. Honestly, finding just the right evergreen specimen can cure the 'garden blahs'.