The darker the colour blue, the more authority it has. It is not a coincidence that it is widely used by Police departments around the world.
Blue is a colour that pursues peace and tranquillity and reveals an inner security and confidence. This is why MDT is comfortably seating on a sunbed certain to score any basket he likes with its special balls.
This is colour relates to trust, honesty, fidelity and loyalty, this is the reason why this colour is used by banks, insurance companies where trust and reliability are important factors. Also Hi-tech and computer technology businesses can benefit for this colour (see MDT balls).