Colors are most powerful in influencing the human mind and body. Vaastu Shastra provides vital guidelines as to how to decorate our homes etc. in decent manner to derive maximum delight with dignity and décor.
According to Zodiac signs
According to some Vaastukars, the color schemes should conform to the raashi (constellation / zodiac sign) of the owner to bring good luck and happiness.

If a room has poor daylight, it should be painted in light color and if a room gets good amount of natural light throughout the day, it can be painted in some deep color.
According to Planets
Some scholars suggest different color to the direction the building faces. They are really the colors of the planets governing these directions.

Using neutral colour doesn’t mean to use fewer colours or no colour. Low intensity colours which are used for background for other accent colours, features, furniture and objects in a space can be classified as neutral. Light colours such as hue of beige, off white and cream, these colours are generally called neutral colour.
According to Five elements
The colour one selects if is according to the principles, can harmonise with the mental energy. The five elements represent a particular colour. All things are made from five elements – fire, earth, air, water and sky, and all are colourful.
When any thing is unbalanced it is due to colour. And by rectifying that colour you will get correct result. All forces are based on colour. And sun rays also reflect seven colours VIBGYOR –Violet, Indigo, Blue, Green, Yellow, Orange, Red, All five elements are represented by some specific colours.
