Many people have their favourite colours, just like they have their favourite lottery numbers. The number 1 is associated with the colour red. The number 3 is associated with the number yellow and the number 8 is associated with the colour rose pink. These theories come from an ancient science that you may or may not believe in known as numerology. Some of these methods can help you personalize your living space and when in doubt, you can always go to a colour consultant.