Convert terminal.sexy json schema to wal.

def terminal_sexy_to_wal(data):
    """Convert terminal.sexy json schema to wal."""
    data["colors"] = {}
    data["special"] = {
        "foreground": data["foreground"],
        "background": data["background"],
        "cursor": data["color"][9]
    }

    for i, color in enumerate(data["color"]):
        data["colors"]["color%s" % i] = color

    return data