melan-, as in melena (black stools) or melanocyte (pigment-producing skin cell).
Melan- or Nigra-
Melan- is the combining form meaning dark or black.
The medical terminology combining form melano- pertains to the color black. It is commonly used in medical terms related to pigment-producing cells known as melanocytes, which are responsible for skin coloration.
Amber
It is called the dark combining.
bilirubinuria
Melena means dark stool, usually referring to black and tarry stool due to bleeding higher in the digestive tract.
Bile or gall is a bitter-tasting, dark green to yellowish brown fluid.Bile Composition: Water - 85.0%, Bile salts - 10%, Coloring matter and mucus - 3%, Fats - 1%, Cholesterin - 0.3%, Inorganic salts - 0.7%.Bilious is the WORD you're looking for.Cholebile (Note: Chole plus cyst, meaning bladder, equals gallbladder;chole plus doch, meaning duct, equals choledocho or common bile duct.)
The most typical birthmark meeting that description is a strawberry hemangioma.
You didn't say if you meant the phrase "in the dark" as the literal meaning or the idiomatic meaning. Literal: "When the moon sets, we will be in the dark." Idiom: "Bill is mad at me, but I am in the dark about the reason."
Kurai means "dark."
Combining green and magenta will produce a dark purple color.
I'm not sure if 'nocturnal eyes' is the correct terminology, but it basically means that whatever has 'nocturnal eyes can see in the dark.
The meaning of Prieto is dark. The term is most commonly a surname which eludes to one having dark hair or skin.