Examine source code of Focused Monotone

{
  "manifest_version": 2,
  "version": "2.0",
  "name": "Monotone 2: Lines in the Cockwhore's Mirror",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "focusedMonotone2.png"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "center center"
      ],
      "additional_backgrounds_tiling": [
        "no-repeat"
      ]
    },
    "colors": {
      "toolbar": "rgba(148, 148, 148, 0.93)",
      "toolbar_text": "rgb(187, 187, 187)",
      "frame": "rgb(51, 51, 51)",
      "tab_background_text": "rgb(187, 187, 187)",
      "toolbar_field": "rgba(217, 21, 141, 0)",
      "toolbar_field_text": "rgb(187, 187, 187)",
      "tab_line": "rgb(187, 187, 187)",
      "popup": "rgb(242, 13, 94)",
      "popup_text": "rgb(255, 255, 255)",
      "button_background_active": "rgb(14, 230, 230)",
      "button_background_hover": "rgb(64, 64, 64)",
      "frame_inactive": "rgb(148, 148, 148)",
      "icons_attention": "rgb(187, 187, 187)",
      "icons": "rgb(187, 187, 187)",
      "popup_border": "rgb(254, 13, 160)",
      "popup_highlight_text": "rgb(0, 0, 0)",
      "popup_highlight": "rgb(14, 230, 230)",
      "sidebar_border": "rgb(255, 255, 255)",
      "sidebar_highlight_text": "rgb(255, 255, 255)",
      "sidebar_highlight": "rgb(0, 0, 0)",
      "sidebar_text": "rgba(140, 140, 140, 0.92)",
      "tab_selected": "rgba(153, 153, 153, 0.83)",
      "tab_text": "rgb(187, 187, 187)",
      "toolbar_bottom_separator": "rgb(102, 102, 102)",
      "toolbar_field_border_focus": "rgb(242, 13, 94)",
      "toolbar_field_border": "rgb(187, 187, 187)",
      "toolbar_field_focus": "rgb(0, 0, 0)",
      "toolbar_field_highlight_text": "rgb(0, 0, 0)",
      "toolbar_field_highlight": "rgb(14, 230, 230)",
      "toolbar_field_text_focus": "rgb(14, 230, 230)",
      "tab_loading": "rgb(187, 187, 187)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{f9280119-6834-4123-a82d-fce8cb3228bb}"
    }
  }
}