That looks nice. That should be the default. I too have my own custom css, but every time i get logged out for some reason i cringe on how the site looks by default. The look says "Hi. Welcome to the nineties. Geocities is just one click away". I know it's wrong content-wise, but that's how it looks. It's like trying to sell a car. If you get it washed and polished and the filthy seats refurbished you earn 50% more than by selling it all dusty and worn.
You can lead your users to water, but alas, you cannot drown them.