Examine source code of Aurora Borealis - Dark

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "theme1",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.png"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "center center"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(36, 36, 36)",
      "toolbar_text": "rgb(232, 232, 232)",
      "frame": "rgb(32, 32, 32)",
      "tab_background_text": "rgb(225, 225, 225)",
      "toolbar_field": "rgb(17, 17, 17)",
      "toolbar_field_text": "rgb(233, 233, 233)",
      "tab_line": "rgba(222, 222, 222, 0)",
      "popup": "rgba(26, 26, 26, 0.73)",
      "popup_text": "rgb(236, 236, 236)",
      "ntp_background": "rgb(28, 28, 28)",
      "popup_border": "rgba(125, 125, 125, 0.57)",
      "tab_selected": "rgb(36, 36, 36)",
      "toolbar_bottom_separator": "rgb(36, 36, 36)",
      "toolbar_field_border_focus": "rgba(56, 130, 192, 0.81)",
      "toolbar_field_highlight": "rgba(121, 121, 121, 0.74)",
      "tab_loading": "rgba(222, 222, 222, 0)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{fab90951-ccd5-4dc9-953e-2f3f1c13712c}"
    }
  }
}