Examine source code of BreakTheChain

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "BreakFree",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.png"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "right bottom"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgba(94, 109, 117, 0.41)",
      "toolbar_text": "rgb(118, 195, 193)",
      "frame": "rgb(29, 62, 79)",
      "tab_background_text": "rgb(167, 217, 255)",
      "toolbar_field": "rgba(255, 255, 255, 0)",
      "toolbar_field_text": "rgb(255, 206, 102)",
      "tab_line": "rgb(244, 190, 81)",
      "popup": "rgb(29, 62, 79)",
      "popup_text": "rgb(118, 195, 193)",
      "button_background_active": "rgba(29, 62, 79, 0.57)",
      "button_background_hover": "rgb(29, 62, 79)",
      "frame_inactive": "rgb(29, 62, 79)",
      "icons_attention": "rgb(244, 190, 81)",
      "icons": "rgb(255, 255, 255)",
      "ntp_background": "rgba(75, 100, 113, 0.57)",
      "ntp_text": "rgb(118, 195, 193)",
      "popup_border": "rgb(222, 242, 240)",
      "popup_highlight_text": "rgb(244, 190, 81)",
      "popup_highlight": "rgb(255, 206, 102)",
      "sidebar_border": "rgb(29, 62, 79)",
      "sidebar_highlight_text": "rgb(138, 204, 255)",
      "sidebar_highlight": "rgb(118, 195, 193)",
      "sidebar_text": "rgb(214, 205, 190)",
      "sidebar": "rgb(29, 62, 79)",
      "tab_loading": "rgb(214, 205, 190)",
      "tab_text": "rgb(255, 206, 102)",
      "toolbar_field_border_focus": "rgb(222, 242, 240)",
      "toolbar_field_border": "rgba(118, 195, 193, 0.53)",
      "toolbar_field_focus": "rgb(236, 236, 236)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{1e8baf97-92b2-4720-9a58-fcc5da49a264}"
    }
  }
}