So with how pricey both MOD: Piebald and MOD B&W are and the exclusivity of said items, make it so that it's possible to CHOOSE which mutation you get instead of possibly getting the one you were hoping for. With MOD: Piebald STARTING at 249 GBS and MOD: B&W starting at the same price, it's disappointing to pay that much, be disappointed, PAY to remove the mutation, and then buy ANOTHER to hopefully get the mutation you want.