Hi! . I have no problem with it being a lambskin as it feels much more durable. I have seen some lambskin before ( classic flap) and they are very delicate, you can really feel it! This one is opposite. I have a feeling it will wear very nicely. And regarding the colour: it is absolutely not a light colour. I would say you need to rub it against very dark denim to have a colour transfer.
The colour itself is amazing, but more in a warmer tone. I have neutral wardrobe, but much more cooler shades like taupe. So my concern is more colour undertone, then lambskin or durability. Hope it helps xxx