Examine source code of Hooker's Green Theme, IKB

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Hooker's Green Theme, IKB",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-001-9c6d74e14860e77ee6f8f43e824bff25.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(73, 121, 107)",
      "toolbar_text": "rgb(255, 255, 255)",
      "frame": "rgb(0, 79, 121)",
      "tab_background_text": "rgb(255, 255, 255)",
      "toolbar_field": "rgb(230, 230, 230)",
      "toolbar_field_text": "rgb(0, 0, 0)",
      "tab_line": "rgb(0, 47, 167)",
      "popup": "rgb(230, 230, 230)",
      "popup_text": "rgb(0, 0, 0)",
      "button_background_hover": "rgb(0, 47, 167)",
      "frame_inactive": "rgb(72, 101, 116)",
      "ntp_background": "rgb(233, 215, 155)",
      "popup_border": "rgb(0, 47, 167)",
      "tab_loading": "rgb(0, 47, 167)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{c91c8f6e-5734-48aa-8bb1-dd1a444b4587}"
    }
  }
}