Examine source code of lynch-ultima-dark

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "lynch-ultima-dark",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.png"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "right top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgba(27, 40, 45, 0)",
      "toolbar_text": "rgb(255, 255, 255)",
      "frame": "rgb(0, 0, 0)",
      "tab_background_text": "rgb(225, 225, 225)",
      "toolbar_field": "rgba(41, 83, 97, 0.26)",
      "toolbar_field_text": "rgb(255, 255, 255)",
      "tab_line": "rgb(29, 221, 191)",
      "popup": "rgb(0, 58, 78)",
      "popup_text": "rgb(255, 255, 255)",
      "button_background_active": "rgb(42, 196, 172)",
      "button_background_hover": "rgb(42, 196, 172)",
      "popup_border": "rgb(42, 196, 172)",
      "popup_highlight": "rgb(41, 83, 97)",
      "sidebar_highlight_text": "rgb(0, 0, 0)",
      "sidebar_highlight": "rgb(42, 196, 172)",
      "sidebar": "rgb(41, 83, 97)",
      "tab_selected": "rgb(0, 58, 78)",
      "tab_loading": "rgb(29, 221, 191)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{b84c39f0-fbda-4ec9-b5fa-22516b10a404}"
    }
  }
}