Leather is a natural product, some cosmetic blemishes or fluctuations in color is expected. It is subject to change from hide to hide and with daily use. Irregularities in the consistency and depth of the color in each are not considered a flaw but inherent of the natural beauty of the leather.
Leather tells your story; the more you use it, the quicker it will break in. The oils from your hands and the sun will give your item a beautiful patina. Submerging leather in water and letting it dry will assist with breaking it in more quickly.
Maintain your leather with Blackrock.