Examine source code of Clean Blue Sakura

{
  "manifest_version": 2,
  "version": "1.1",
  "name": "Clean Blue Sakura",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.png"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "right center"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgba(7, 50, 84, 0)",
      "toolbar_text": "rgb(183, 251, 247)",
      "frame": "rgb(11, 39, 64)",
      "tab_background_text": "rgb(183, 251, 247)",
      "toolbar_field": "rgb(13, 39, 64)",
      "toolbar_field_text": "rgb(22, 241, 241)",
      "tab_line": "rgb(255, 165, 0)",
      "popup": "rgb(7, 50, 84)",
      "popup_text": "rgb(255, 255, 255)",
      "button_background_active": "rgba(0, 69, 255, 0.15)",
      "button_background_hover": "rgba(0, 242, 255, 0.15)",
      "icons_attention": "rgb(0, 255, 0)",
      "ntp_background": "rgb(13, 39, 64)",
      "ntp_text": "rgb(183, 251, 247)",
      "tab_loading": "rgb(255, 199, 146)",
      "tab_selected": "rgb(21, 32, 57)",
      "tab_text": "rgb(255, 199, 146)",
      "toolbar_bottom_separator": "rgb(77, 115, 139)",
      "toolbar_field_border": "rgb(74, 141, 170)",
      "toolbar_field_highlight": "rgb(161, 91, 0)",
      "toolbar_top_separator": "rgba(0, 255, 240, 0)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{e2f6775c-b743-432c-9003-adf589c29ce6}"
    }
  }
}