Examine source code of Agnes Tachyon Theme

{
  "name": "Agnes Tachyon Dual",
  "manifest_version": 2,
  "version": "1.1",
  "theme": {
    "colors": {
      "frame": "#1A1A1A",
      "frame_inactive": "#121212",
      "tab_text": "#F4E5D5",
      "tab_background_text": "#E8D5C0",
      "tab_background_separator": "rgba(244, 229, 213, 0.3)",
      "tab_line": "#8D4829",
      "tab_loading": "#A5522E",
      "icons_attention": "#8D4829",
      "toolbar": "rgba(30, 30, 30, 0.55)",
      "toolbar_top_separator": "rgba(141, 72, 41, 0.25)",
      "toolbar_bottom_separator": "rgba(141, 72, 41, 0.2)",
      "toolbar_vertical_separator": "rgba(244, 229, 213, 0.2)",
      "toolbar_field": "#25201C",
      "toolbar_field_text": "#F4E5D5",
      "toolbar_field_border": "#A5522E",
      "toolbar_field_focus": "#331C12",
      "toolbar_field_border_focus": "#A5522E",
      "button_background_hover": "rgba(244, 229, 213, 0.15)",
      "button_background_active": "rgba(244, 229, 213, 0.25)",
      "icons": "#ECD0A7",
      "bookmark_text": "#F4E5D5",
      "popup": "#1E1E1E",
      "popup_text": "#F4E5D5",
      "popup_border": "#333333",
      "popup_highlight": "#8D4829",
      "popup_highlight_text": "#F8F0E8",
      "ntp_background": "#1A1A1A",
      "ntp_text": "#E8D5C0",
      "sidebar": "#1E1E1E",
      "sidebar_text": "#F4E5D5",
      "sidebar_border": "#333333",
      "sidebar_highlight": "#2D1B10",
      "sidebar_highlight_text": "#F4E5D5"
    },
    "images": {
      "additional_backgrounds": [
        "images/uma-musume-agnes-tachyon-APNG.png",
        "images/uma-musume-agnes-tachyon-static.png"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "left top",
        "right top"
      ],
      "additional_backgrounds_tiling": [
        "no-repeat",
        "no-repeat"
      ],
      "additional_backgrounds_position": "0px 0px, calc(100% - 10px) 0px"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "TachyonsNumeroUnoGuineaPig@CustomTheme"
    }
  }
}