Examine source code of Solarized Burn

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Solarized Burn",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-011-d53e0d0d1538ed554a90e056a2f04eca.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(0, 4, 5)",
      "toolbar_text": "rgb(202, 76, 22)",
      "frame": "rgb(0, 35, 46)",
      "tab_background_text": "rgb(111, 168, 182)",
      "toolbar_field": "rgb(0, 35, 46)",
      "toolbar_field_text": "rgb(111, 168, 182)",
      "tab_line": "rgb(202, 76, 22)",
      "popup": "rgb(0, 35, 46)",
      "popup_text": "rgb(111, 168, 182)",
      "ntp_background": "rgb(0, 35, 46)",
      "ntp_text": "rgb(111, 168, 182)",
      "popup_border": "rgb(202, 76, 22)",
      "sidebar_border": "rgb(202, 76, 22)",
      "sidebar_highlight": "rgb(202, 76, 22)",
      "sidebar_text": "rgb(111, 168, 182)",
      "sidebar": "rgb(0, 35, 46)",
      "tab_loading": "rgb(202, 76, 22)",
      "toolbar_field_border_focus": "rgb(0, 35, 46)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{4dd17cd2-2ea8-4995-8aea-65b834ad1c08}"
    }
  }
}