No two wood planks are alike and color variation is part of natural characteristic of wood. Wood also changes color over time due to sunlight and oxidation process. Since wood is a creation of nature there is no set formula to keep the colors constant. Customers need to be aware of these behavioral changes and understand the behavioral changes of the wood species they choose prior to ordering. Certain wood products will become darker over time while some other may become lighter. These gradual color changes are expected and experienced in all natural wood species and are considered normal and are not covered under the warranty.