Examine source code of Material Tema DarkGrey

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Material Design DarkGrey",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.png"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "right top"
      ],
      "additional_backgrounds_tiling": [
        "no-repeat"
      ]
    },
    "colors": {
      "toolbar": "rgba(83, 83, 83, 0)",
      "toolbar_text": "rgb(227, 227, 227)",
      "frame": "rgb(19, 22, 35)",
      "tab_background_text": "rgb(227, 227, 227)",
      "toolbar_field": "rgb(225, 229, 232)",
      "toolbar_field_text": "rgb(0, 0, 0)",
      "tab_line": "rgb(0, 0, 0)",
      "popup": "rgb(255, 255, 255)",
      "popup_text": "rgb(0, 0, 0)",
      "button_background_active": "rgb(165, 0, 255)",
      "button_background_hover": "rgb(255, 83, 0)",
      "ntp_background": "rgb(200, 200, 200)",
      "ntp_text": "rgba(50, 50, 50, 0)",
      "tab_loading": "rgb(0, 0, 0)",
      "tab_selected": "rgb(255, 83, 0)",
      "tab_text": "rgb(255, 255, 255)",
      "toolbar_field_border_focus": "rgb(255, 83, 0)",
      "toolbar_field_highlight": "rgb(165, 0, 255)",
      "toolbar_top_separator": "rgba(255, 255, 255, 0)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{6e96569f-f49f-4ae5-8506-4e2778d716bc}"
    }
  }
}