Colour

“Colour is used in design to attract attention, group elements, indicating meaning, and enhance aesthetics.”
William Lidwell

Colour when used well can enhance a products aesthetics and attraction however it can also have the opposite effect and decrease the products like ability. Colour can express lots of different feelings of the product for example maturity or price bracket. Research into colour psychology has found that people react differently to different colours. It is believed that green is a calming refreshing colour and people appear to be more relaxed in a green room which is why it is often found in hospitals.
The number of colours used in a design is important as it can over complicate and the eye can only process around five colours at one glance so colours should be used conservatively. For aesthetic colour choices adjacent colours on the colour wheel should be chosen with warmer colours used for foreground elements and cooler colours for background elements.
Changing the saturation of the colours can also have different effects on the viewer. Saturated colours are used to attract attention where as desaturated colours are used when performance and efficiency are the priority. There are a lot more considerations that a designer needs to consider when picking the colour for their product than you would first believe.
The colour chosen can result in a person’s perception about the product and their want to buy it or use it. The form and function of the product could be over shadowed by the colour and what consumers perceive about it.