Examine source code of Dark Abstract

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Dark Abstract",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.png"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "right top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(24, 26, 29)",
      "toolbar_text": "rgb(202, 202, 202)",
      "frame": "rgb(32, 33, 37)",
      "tab_background_text": "rgb(208, 208, 208)",
      "toolbar_field": "rgb(14, 16, 17)",
      "toolbar_field_text": "rgb(226, 226, 226)",
      "tab_line": "rgb(200, 200, 200)",
      "popup": "rgb(24, 26, 29)",
      "popup_text": "rgb(212, 212, 212)",
      "button_background_active": "rgb(24, 26, 29)",
      "button_background_hover": "rgb(66, 69, 74)",
      "icons_attention": "rgb(66, 69, 74)",
      "ntp_background": "rgb(22, 24, 27)",
      "popup_border": "rgb(200, 200, 200)",
      "toolbar_bottom_separator": "rgb(14, 16, 17)",
      "toolbar_field_border_focus": "rgb(139, 139, 139)",
      "toolbar_top_separator": "rgb(14, 16, 17)",
      "tab_loading": "rgb(200, 200, 200)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{8af0dadc-1672-498a-8c48-6372aea181a1}"
    }
  }
}