Ever since design class in high school I have been fascinated by complementary colours. I was once taught that the complementary colours to the three basic colors red, blue and yellow were green, orange and purple. But according to my online oracle, Wikipedia, it seems that people are disagreeing about this. Or to put it in another way, it all depends on what colour model you're talking about. Anyways, here is a very colourful wall at Stortinget subway station.