On some pages, green is used to indicate a product is gluten-free. Red is used to indicate the product contains gluten.
Some products are neither green nor red but brown.
There are two reasons why a product might be shown in brown rather than green or red. The first is when the product is in the database but its gluten status has not yet been determined. The second is in special cases that are best described by an example, such as Dannon yogurt. In the past, Dannon listed their products as gluten-free. However, more recently, they have changed their stance.