Do Cymbidium goeringii flower buds change color after blooming when exposed to sunlight?

    Orchidflower color is determined by genetic genes, and will not change color due to the intensity of sunlight. Therefore, your worry about it changing color after exposure to sunlight is unnecessary. But although the color does not change, the depth of the shade is directly related to the intensity of light. For example, a variety that originally blooms redflowers,if given sufficient light exposure during the bud stage, the flower color will be a deeper red after blooming. Conversely, if there is less light, the flower color will be relatively lighter. If artificially covered with black cloth or a tile tube, keeping it in lightless darkness from bud to bloom, the flower color will be even lighter, producing a rare peach color. Nowadays some unscrupulous orchid vendors use covers to shade the flower buds or flower stalks, causing them to bloom with fake peach-colored flowers under no light or weak light, thereby deceiving consumers.