1) Color 2) Design decision 
In color theory, a color scheme is the choice of colors used in design for a range of media. For example, the `Achromatic` use of a white background with black text is an example of a basic and commonly default color scheme in web design. Color schemes are used to create style and appeal. Colors that create an aesthetic feeling when used togethe.....
a combination of colors designated for use through out a room or house
Descriptive term used to describe a combination of colors created for use in art and design, also relating to the color’s value and intensity.
[n] - a planned combination of colors
the choice of colors used in a design or artwork.
a set of colors chosen to combine within a composition.
colour scheme noun a planned combination of colors; `the color scheme for this room was determined by an interior decorator`
an arrangement or pattern of colors or colored objects conceived of as forming an integrated whole: the color scheme of a living room.