My favourite colour combination would have to be Blue and White. Firstly this would be because my favourite colour is blue; blue is a calm and relaxing colour at the same time as being vibrant. In addition white is a clean colour, white compliments any colour that accompanies it which is often why it is used for background as not to take anything away from whatever is being displayed.
The most recent, and probably most famous, advocate of Blite is Apple. They have based a renaissance of their company on this with the famous apple logo in blue laid on a white background.
(Pic http://www.floridaventureblog.com)The mood that this colour combination creates is one that is cool and refreshing, not only this; it also looks modish and tasteful. Although this combination has these connotations there are examples of where Blite looks classic and refined this can been seen in the popular Willow Pattern design.
(http://library.thinkquest.org/)
I believe the combinations main attraction is its fresh and peaceful ambience. This could be due to the association it has with the sky which conjures up thoughts of floating clouds rolling over scenic views.
(http://thor.info.uaic.ro/~busaco/photos/good-bye-blue-sky/index.html)
This colour combination is also well known as the colours for the Scottish Flag and so it has history routed there. We all saw Mel Gibson with his face painted white and Blue in Braveheart.
(www.mod.uk/.../Health/Scotland.htm)
And so I would have to advise that if you were looking for a colour combination to boost your sales, improve your product image or just add a touch of class then you should pick the combination of Blue and White = Blite a proven winning combination.