The phrase "a shadowy green" is correct and usable in written English.
It can be used to describe a color that is dark or muted, often evoking a sense of mystery or eeriness.
Example: "The forest was filled with a shadowy green, making it difficult to see what lay ahead."
Alternatives: "a murky green" or "a dim green".
Outside, the rain had stopped, and Kern could see off to the left a shadowy green, with its numbered flag still in the hole, ready for play if November relented.
It arrived as a shadowy green mountain under a blizzard of grated pecorino Rossellino cheese (a nutty Italian sheep's milk cheese with a ruddy rind) and bread crumbs, flavored with lemon and chili.
Created over an approximately 15-month period ending in 2009, Mr. Downes's painting depicts the North River Water Pollution Control Plant, its cream-colored, modern exterior gleaming in the sun by contrast to the shadowy, green infrastructure of the highway overhead.
Ms. Nolan pulls out all the stops in her oil study of cherry trees in full bloom, emphasizing the floral abundance by using free brushwork and the contrast of luscious pinks against the shadowy green lawn.
It would be necessary, no doubt, to gloss a phrase like "the sea-green shadows of your dream," but again the entire context suggests 1) that the sea itself, green as it literally is, serves as a projection or shadow of the ships' straining toward faraway places, and 2) that this straining, or dream, remains a shadowy thing but at the same time young (green) or naive (green).
Quite a bit of its panel and frame have been left bare, which is also the case with "Red Sky at Night," where several strokes of red hover above an acidic transition of green to yellow to a shadowy brown that suddenly implies a great distance.
As recreated by Clifton Taylor, Jennifer Tipton's murky lighting made it difficult to get a sense of the performers in Mr. Taylor's "Last Look" (1985), a shadowy hall of standing mirrors (designed by Alex Katz, who is also responsible for the men's green jumpsuits and women's shiny wrap dresses).
A lighthouse in the gloom, a shadowy bar where a striptease is performed against a forest backdrop, and an examination room bathed in green light form the visual backbone of the ambient narrative.
A shadowy figure hands you an invitation.
