Computers that are brightly coloured and keyed to match the moods we want to have could be just around the corner. White and deep blue are the colours PCs should be for computers, not grey or cream.

June McLeod is a professional colour therapist, who's recently worked for Dixon's PC World stores. She says companies such as Apple and NEC have got it right by making PCs with bright colours, and PC makers who keep churning out grey boxes are failing the populace. Some big PC makers are now looking to follow suit.

"We're doing the population an injustice by making them sit in front of [grey and beige computers]," says June McLeod, freelance colour therapist/psychologist and author.

"Quite frankly it's such a bland non-colour. The theory is that it helps people focus on work at hand, but if you've got people doing data input, which is a boring job, if you put an orange surround on the PC they would feel more energised."

McLeod has been in talks very recently with two major international box-shifters who cannot be named. But it looks like the big boys are finally waking up to the idea that colour, done well, makes boxes fly off the shelves. She says the best machine to have would be a computer the colour of which could be changed at whim.

According to McLeod's research, women like indigo or mint green. Men who are creative also like indigo or other blues, and children should have white PCs when they are very young, and blue ones as they grow up.

McLeod's new book, Colours of the Soul, has just been published, in which she explains what colours will work for different people and why.