“We don’t want the user to think about the theme too much, we want the browser to perceptually fade away so that the user can focus on what it is they are actually doing. In a sense it is a little ironic, the harder we work to make Firefox fade away the less likely it is that the user will notice the amount of effort that has gone into crafting the interface. However, the very best user interfaces go completely unnoticed, that is what makes them good.”

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