Examine source code of Earthy glow

{
  "manifest_version": 2,
  "version": "1.2",
  "author": "mpsq",
  "name": "Earthy glow",
  "browser_specific_settings": {
    "gecko": {
      "id": "me@mpsq.org"
    }
  },
  "theme": {
    "images": {
      "additional_backgrounds": []
    },
    "properties": {
      "additional_backgrounds_alignment": [],
      "additional_backgrounds_tiling": []
    },
    "colors": {
      "toolbar": "rgba(62, 39, 45, 0.81)",
      "toolbar_text": "rgb(211, 134, 155)",
      "frame": "rgb(27, 17, 14)",
      "tab_background_text": "rgb(193, 142, 118)",
      "toolbar_field": "rgb(44, 44, 12)",
      "toolbar_field_text": "rgb(224, 138, 38)",
      "tab_line": "rgb(211, 134, 155)",
      "popup": "rgb(9, 35, 42)",
      "popup_text": "rgb(228, 203, 179)",
      "tab_text": "rgb(211, 134, 155)",
      "tab_loading": "rgb(211, 134, 155)"
    }
  }
}