Examine source code of Dark Rose

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Dark Rose",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.png"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "right top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(36, 10, 10)",
      "toolbar_text": "rgb(255, 62, 0)",
      "frame": "rgb(66, 3, 12)",
      "tab_background_text": "rgb(18, 111, 18)",
      "toolbar_field": "rgb(2, 22, 20)",
      "toolbar_field_text": "rgb(141, 238, 0)",
      "tab_line": "rgb(33, 155, 59)",
      "popup": "rgb(55, 2, 14)",
      "popup_text": "rgb(215, 226, 239)",
      "button_background_active": "rgb(36, 206, 26)",
      "button_background_hover": "rgba(20, 93, 69, 0.68)",
      "icons": "rgb(198, 0, 47)",
      "ntp_background": "rgb(21, 21, 21)",
      "ntp_text": "rgb(255, 0, 4)",
      "popup_border": "rgb(240, 0, 51)",
      "tab_loading": "rgb(16, 221, 4)",
      "tab_selected": "rgb(38, 38, 38)",
      "tab_text": "rgb(255, 70, 74)",
      "toolbar_bottom_separator": "rgb(177, 21, 23)",
      "toolbar_field_border_focus": "rgb(212, 5, 57)",
      "toolbar_field_border": "rgb(125, 9, 63)",
      "toolbar_field_focus": "rgb(86, 0, 12)",
      "toolbar_field_separator": "rgb(242, 0, 51)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{0e139098-5032-41ba-a6b6-727fcea8e8d5}"
    }
  }
}