Examine source code of Aesthetic Bluish Theme

{
  "manifest_version": 2,
  "version": "3.1",
  "name": "Aesthetic Bluish Theme",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.jpg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "left top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgba(225, 234, 239, 0)",
      "toolbar_text": "rgb(0, 0, 0)",
      "frame": "rgb(244, 180, 212)",
      "tab_background_text": "rgb(41, 38, 39)",
      "toolbar_field": "rgba(244, 180, 212, 0)",
      "toolbar_field_text": "rgb(0, 0, 0)",
      "tab_line": "rgba(255, 138, 163, 0)",
      "popup": "rgb(244, 180, 212)",
      "popup_text": "rgb(38, 128, 128)",
      "button_background_active": "rgba(34, 25, 77, 0.77)",
      "button_background_hover": "rgb(244, 180, 212)",
      "ntp_background": "rgb(244, 180, 212)",
      "tab_loading": "rgb(244, 180, 212)",
      "toolbar_top_separator": "rgba(34, 25, 77, 0)",
      "toolbar_vertical_separator": "rgba(34, 25, 77, 0)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{966a831f-05c7-41b3-b1c9-f6dbf647d6a3}"
    }
  }
}