Because he wants to see himself as the "designer". It's something as trivial as color but it makes it his design and he can add Bitcoin logo to his portfolio, even though hich "change" could have been done in mspaint by a 10 year old. Usually if we change something it's meant to bring some benefits but is there really an improvement here? OP said it's going to look more modern. Really? You can use any background you want with the BTC sign without having to tag it with your name.