Systems and methods for image generation are described. Embodiments of the present disclosure obtain user input that indicates a target color and a semantic label for a region of an image to be generated. The system also generates of obtains a noise map including noise biased towards the target color in the region indicated by the user input. A diffusion model generates the image based on the noise map and the semantic label for the region. The image can include an object in the designated region that is described by the semantic label and that has the target color.