Step Chameleon Skin A skulk's racial bonus to Stealth comes from his ability to change the color of his skin to match his surroundings, even complex or regular patterns like bricks and mortar. A skulk loses this conditional bonus if he is wearing armor, or if he wears any clothing that covers more than one-quarter of his body, as skulks can only change their own flesh, not things they carry. A skulk normally conceals small items behind his body; by putting his back to a wall and changing his front half, he can hide the item because observers don't have line of sight to the item.