What's the benefit of a tan color grow bag?

There are a few potential benefits to using tan-colored grow bags:

Heat absorption: Tan colors are known to absorb heat, which can be beneficial for plants that need extra warmth to grow. This can be especially useful in cooler climates or during cooler seasons.
UV protection: Tan colors can also provide some protection against ultraviolet (UV) radiation, which can be harmful to plants. Using a tan-colored grow bag can help to reduce the amount of UV radiation that reaches the plants, which can help to protect their health and promote better growth.
Aesthetics: Tan colors are often neutral and can blend in well with a variety of garden or landscape settings. This can make grow bags with a tan color more aesthetically pleasing and less obtrusive than grow bags with brighter or more vibrant colors.

It's worth noting that the benefits of a tan-colored grow bag will depend on the specific needs of the plants you are growing and the conditions in which they are growing. It may be more important to consider other factors, such as the material of the grow bag, the size and shape of the bag, and the drainage and ventilation features of the bag, when choosing a grow bag for your plants.