There is no standardized color for sunflower seed oil bottle caps. Different brands and products may use different color designs, usually prioritizing practicality and brand identification. For example, some products use dark-colored caps (such as dark plastic or metal caps) to reduce the impact of light on the oil, thus helping to maintain its quality.
Furthermore, cap color may change due to packaging upgrades, but the specific color should be based on the actual product. When choosing, pay more attention to the cap's airtight design to ensure the oil's freshness.