Examine source code of Clean Focus Light Gray

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Clean Fokus light gray",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-000-5672c42860d5b06e1058dc477397f3ef.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgba(117, 117, 117, 0.15)",
      "toolbar_text": "rgb(0, 0, 0)",
      "frame": "rgb(196, 199, 207)",
      "tab_background_text": "rgb(0, 0, 0)",
      "toolbar_field": "rgba(255, 255, 255, 0.23)",
      "toolbar_field_text": "rgb(0, 0, 0)",
      "tab_line": "rgba(36, 36, 41, 0)",
      "popup": "rgba(217, 217, 226, 0.95)",
      "popup_text": "rgb(0, 0, 0)",
      "ntp_background": "rgb(255, 255, 255)",
      "tab_loading": "rgba(36, 36, 41, 0)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{e85684be-ca5d-48ca-a277-e24076091b04}"
    }
  }
}