Wood's natural changesWood exposed to normal sunlight is subject to colour changes. As with all natural products made from wood, these changes are expected and add to the beauty and distinctiveness of wood floors.If you move or rearrange carpets and furniture periodically, you avoid distinct lines between the exposed and unexposed areas of the floor. The swatches show the shades that different wood species will turn after 2–3 years' exposure to normal sunlight.