This contribution examines the role of colour in the built environment, namely in the architectural exteriors and urban spaces with regard to the current restructuring and transformation processes. It attempts to summarize the main characteristics of the changing manifestations of colour in the urban environment, the impact on its functioning and aesthetical acceptance, the changes in the attitudes of people to colour that have been accompanying the transformation processes in the society over the past more than 10 years. Colour has for decades been underestimated in its importance and impact in the built environment. Time pressure in which the actors of the planning and design process find themselves, the lack of relevant training as well as economically conditioned priorities put environmental colour design often into a marginal position in the whole design process.