Though about favourite liveries but liveries none the less and someone may even like these ones, I've always been intrigued by this. F1 teams, unlike IndyCar, have to use a uniform livery. However, in 1984 Tyrrell used different liveries on both cars. For example:
Martin Brundle
Stefan Bellof
Stefan Johansson
Does anyone know why a uniform livery is used and when it became a rule?