The effect of colours on our mood, attention and imagination is well known. The colour scheme of an exhibition is influenced by a variety of factors. According to a Hungarian textbook on museology, (Korek, 1988), the use of bright colours in European museums is an overseas influence. Traditional museum walls used to be greyish white, light, yellowish brown, or a lighter shade of grey, and installation furniture was beige or grey. Museums and galleries today use a wide range of different colours although the use of white as a background that accentuates other hues is still dominant. Black installation cases or walls provide dramatic effects and are also used more often these days. Children obviously prefer vivid colours. The Children’s Museum in New Orleans is housed in an old warehouse. Due to bright colouring and a creative division of space, the original function and atmosphere of the building has completely disappeared.