That's true of course. But because EaF was the first episode that CBS-D did and at that time it was a trial, they had a lot more time to complete and perfect the look of it. That look was carried over to the subsequent episodes in season 1. From what I've read and understand about the project, HTV was not involved in that development process. They were brought in when CBS-D couldn't complete all the work in time. And since they were working almost independently from CBS-D (with only the Okudas advising both teams) they didn't benefit from CBS's experiences.