As a child my favourite colour was blue, closely followed by green and purple (either side of it on the colour spectrum). As I became an adult I added a fondness for red, and now find myself being attracted to a particular shade of golden yellow.
In fact, basically I love colour. I seem to have ended up with a'uniform' of trousers (preferably cords) and long sleeved tops, almost all in single colours, which I mix and match to contrast but not clash e.g red trousers look great with grey tops, green tops and to a certain extent blue, but not with purple or orange. My purple trousers look best with green or white (red, blue or black are no good at all), although I'm looking for a golden yellow top to go with them too. I love the contrast between colours, and I do like stripy things, with multicoloured stripes. I don't like pastel or pale or luminous colours much, mainly bright or dark ones, but in general most 'good' colours in the right combinations look good and I can take quite a child-like pleasure in seeing colourful things, or occasionally become motivated to buy whole series of things if they are all in different colours.