Yellow, orange and red spread across the leaf in gradients, overlapping fields and fine, irregular markings. Colour becomes a way of approaching transformations that are only partly accessible through the visible surface. This chapter examines where colours meet, how they follow or cross the vein network, and how their distribution changes the appearance of the whole leaf. Microscopic views reveal textures and small transitions that recede within the larger image. Water loss, seasonal ageing and local changes in the tissue are considered as potentially overlapping processes whose individual contributions remain open to investigation. Together, the images form a chromatic record of leaf bodies in transition.