Examine source code of Nighttime2 - Dark Blue

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Nighttime2 - Dark Blue",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.png"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "right top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgba(47, 48, 67, 0.85)",
      "toolbar_text": "rgb(213, 223, 230)",
      "frame": "rgb(44, 44, 54)",
      "tab_background_text": "rgb(255, 255, 255)",
      "toolbar_field": "rgba(47, 48, 67, 0.99)",
      "toolbar_field_text": "rgb(213, 223, 230)",
      "tab_line": "rgb(146, 152, 201)",
      "popup": "rgb(52, 53, 71)",
      "popup_text": "rgb(213, 223, 230)",
      "button_background_active": "rgba(127, 122, 162, 0.23)",
      "button_background_hover": "rgb(52, 53, 71)",
      "frame_inactive": "rgb(60, 57, 83)",
      "icons_attention": "rgb(178, 9, 9)",
      "icons": "rgb(146, 152, 201)",
      "ntp_background": "rgb(45, 45, 61)",
      "ntp_text": "rgb(253, 253, 253)",
      "popup_border": "rgba(119, 108, 178, 0.62)",
      "popup_highlight_text": "rgba(39, 47, 148, 0.15)",
      "popup_highlight": "rgba(19, 21, 39, 0.79)",
      "sidebar_highlight_text": "rgba(39, 47, 148, 0)",
      "sidebar_highlight": "rgba(62, 67, 132, 0.17)",
      "sidebar_text": "rgba(44, 51, 144, 0)",
      "tab_background_separator": "rgb(146, 152, 201)",
      "tab_loading": "rgba(61, 65, 133, 0.08)",
      "tab_selected": "rgba(61, 65, 133, 0.1)",
      "tab_text": "rgb(146, 152, 201)",
      "toolbar_bottom_separator": "rgb(136, 131, 154)",
      "toolbar_field_border": "rgba(119, 108, 178, 0.67)",
      "toolbar_field_highlight_text": "rgb(177, 170, 216)",
      "toolbar_field_separator": "rgb(157, 147, 193)",
      "toolbar_field_text_focus": "rgb(204, 201, 226)",
      "toolbar_top_separator": "rgba(52, 53, 71, 0)",
      "toolbar_vertical_separator": "rgba(119, 108, 178, 0.67)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{388630b7-f48e-4ece-ac0c-d91df4d7aa42}"
    }
  }
}