This is a UI theme to the Genesis Syntax Theme. Its light, minimalistic design is meant to be a welcome contrast to the syntax theme.
Genesis UI features a Focus Mode* that lowers the opacity of all UI elements that are not immediately relevant--unless hovered on. The most noticeable characteristic of Focus Mode is how it effects your Tree View. In Focus Mode, your Tree View will only display open folders--unless hovered on. The purpose of this is to minimize the distraction of websites with complex directories, allowing you to only see the files that you're currently working with.
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