Examine source code of confort-eyes

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "confort-eyes",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-006-51ab495c5f5dde6a3cddb22484acd00d.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(255, 160, 25)",
      "toolbar_text": "rgb(0, 0, 0)",
      "frame": "rgb(200, 122, 9)",
      "tab_background_text": "rgb(0, 0, 0)",
      "toolbar_field": "rgba(255, 255, 255, 0)",
      "toolbar_field_text": "rgb(0, 0, 0)",
      "tab_line": "rgb(253, 124, 73)",
      "popup": "rgb(208, 118, 6)",
      "popup_text": "rgb(0, 0, 0)",
      "tab_loading": "rgb(253, 124, 73)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{514ca8e9-1088-43d8-8db3-920e6e19d761}"
    }
  }
}