Examine source code of yoru theme

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "yoru eyes",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.png"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "right center"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgba(27, 29, 30, 0.39)",
      "toolbar_text": "rgb(255, 255, 255)",
      "frame": "rgb(0, 0, 0)",
      "tab_background_text": "rgb(255, 255, 255)",
      "toolbar_field": "rgba(238, 238, 238, 0.89)",
      "toolbar_field_text": "rgb(0, 0, 0)",
      "tab_line": "rgb(0, 0, 0)",
      "popup": "rgb(0, 0, 0)",
      "popup_text": "rgb(255, 255, 255)",
      "button_background_hover": "rgba(73, 91, 100, 0.39)",
      "icons": "rgb(255, 255, 255)",
      "ntp_background": "rgb(20, 20, 20)",
      "ntp_text": "rgb(255, 255, 255)",
      "tab_loading": "rgb(0, 0, 0)",
      "tab_selected": "rgb(255, 255, 255)",
      "tab_text": "rgb(0, 0, 0)",
      "toolbar_bottom_separator": "rgba(27, 29, 30, 0.39)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{11e17ef2-a889-48cb-a69c-7acb234cb937}"
    }
  }
}