Look at the way colour is described
Red HOT. Cool BLue. Daring Purple. Subdued cream.
Colour speaks volumes about your product, it conveys taste and mood of your design. When a user chooses a certain colour, it is like an extension of his personality. The right shade and tone make a lot of differences. Look at Apple products - they are mostly white. Louis Vuitton has her leather goods mostly in signature brown. Mini-Hifi are usually silver, creamy white or black.
Color has also been known to be associated with mood. Using the right colors in rooms can have a definite affect on motivation. Hence, children rooms are designed with brighly painted colours, hospital often uses green to relax the patient mood. In fact, there are desciptors use to describe what the colour means or signified.
Hence, choose the right colour or colour combinations do make a difference to your final product. Read on to understand a bit more about colour.
Colour is an important part of graphic design. You need to know the following facts about colour.
The primary colours are red, yellow and blue.
The secondary colours are made by mixing the primary colours as follows: red + yellow = orange; red + blue = violet; blue + yellow = green.
Mixing primary and secondary colours together creates tertiary colours. These are dark browns, greens and greys.
The colour wheel illustrates how the colours relate to each other.
The colours next to each other harmonise (go together). Use harmonising colours to make elements of a design look related to each other.
Colours that are on opposite sides of the wheel contrast with each other (they are 'complementary' colours). Use contrasting colours to make elements of a design stand out from each other.
Yellow, orange and red are 'warm' colours; green and blue are 'cold'. Warm colours appear to come towards you from the page, while cold colours appear to recede.
Adapted from http://www.bbc.co.uk/schools/gcsebitesize/design/graphics/drawingsketchingrev2.shtml