AbstractEvidence‐based colour interventions in the urban landscape are becoming more common in many countries and some have garnered the term “tactical urbanism”, defined as relatively low‐cost changes to the built environment intended to provide a quick solution to an urban environment challenge. This article reports on two proposed small‐scale colour interventions that aim to calm traffic, prioritize pedestrian traffic, support safety initiatives, and enhance the urban environment. Inspired by both larger and small interventions around the world, the rationale for two proposed colour interventions in Sydney is described along with the findings of a two‐stage survey conducted to evaluate the effectiveness of the proposed colour intervention designs.