No, our auto mats DO NOT naturally change color over time. Note: If you notice your mats are turning yellow, or other colors, it’s likely to have been caused by dirt, grime, debris, and oils that have been tracked in by shoes (if you feel they turned yellow for any other reason, please reach out to our support team for assistance).We also offer a warranty for our auto products, but this does not cover accidental stains, damage, or anything else related to normal wear and tear.