Examine source code of Flat green HQ

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Flat green HQ",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-000-5672c42860d5b06e1058dc477397f3ef.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(231, 238, 232)",
      "toolbar_text": "rgb(0, 0, 0)",
      "frame": "rgb(210, 240, 217)",
      "tab_background_text": "rgb(0, 0, 0)",
      "toolbar_field": "rgb(246, 255, 247)",
      "toolbar_field_text": "rgb(0, 0, 0)",
      "tab_line": "rgb(255, 255, 255)",
      "popup": "rgb(255, 255, 255)",
      "popup_text": "rgb(0, 0, 0)",
      "button_background_hover": "rgb(243, 184, 184)",
      "icons_attention": "rgb(0, 0, 0)",
      "ntp_text": "rgb(0, 0, 0)",
      "sidebar_highlight_text": "rgb(0, 0, 0)",
      "sidebar_text": "rgb(0, 0, 0)",
      "tab_selected": "rgb(255, 255, 255)",
      "toolbar_field_text_focus": "rgb(0, 0, 0)",
      "tab_loading": "rgb(255, 255, 255)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{47c82904-a5bc-4a3b-973a-188737756e53}"
    }
  }
}