I worked with the line for 10 years. Please, don't misunderstand, I only highlight the corrected grain to answer the question about changing the color - it's almost impossible due to the built-up layers of finish and sprayed on topcoat that these shoes are produced with. There are different grades of corrected grain, or polished cobbler, calfskin just like there are different quality levels of analine finished calfskin. The best hides are young calf, or veal, and are the highest quality - but most hides available are older animals and are a byproduct of the meat industry. As the worlds consumption of veal (and red meat in general) has declined, so has the availability of top quality hides. Most of the supply available will have some defects in them, mainly fat wrinkles. This is covered up by rolling numerous layers of pigment via glass rollers over the hide. This is still good leather from a durability perspective, just not from a purists view of 'finish'. The next level down, and most of the supply for 'good' shoes (sell in the 125-195 price range) are actually splits - leather from the thickest part of the hide that is sliced into as many layers as possible and finished in the same way. These leathers are then produced into shoes with a thick cotton facing between the lining and the upper to give the feel of a plump calfskin. They are also usually sprayed with a polyurethane like substance to give the finish some sense of depth. They look real good on the shelf but don't last very long. This is what Mezlan typically sells. Same thing with the soles. Many layers are glued together to form the sole leather. It's all leather, just not one nice piece - mainly cement. That's why, if you wear a hole in the soles, you can see 'rings' (like in wood) around the wear spot. So, all in all, decent shoes if bought for a good price. Look, they sell TONS of shoes so many people like them just fine and don't mind these 'minor' details one bit.