Examine source code of Riot

{
  "manifest_version": 2,
  "version": "3.41",
  "name": "Rito",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.png"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "center center"
      ],
      "additional_backgrounds_tiling": [
        "no-repeat"
      ]
    },
    "colors": {
      "toolbar": "rgba(255, 0, 4, 0)",
      "toolbar_text": "rgb(255, 255, 255)",
      "frame": "rgb(0, 0, 0)",
      "tab_background_text": "rgb(0, 255, 248)",
      "toolbar_field": "rgba(0, 0, 0, 0)",
      "toolbar_field_text": "rgb(255, 255, 255)",
      "tab_line": "rgb(255, 0, 53)",
      "popup": "rgb(0, 0, 0)",
      "popup_text": "rgb(0, 234, 255)",
      "button_background_hover": "rgba(255, 255, 255, 0.58)",
      "icons": "rgb(255, 0, 0)",
      "popup_border": "rgb(255, 54, 0)",
      "tab_selected": "rgba(255, 255, 255, 0.33)",
      "toolbar_bottom_separator": "rgba(255, 0, 0, 0.83)",
      "toolbar_field_border": "rgb(0, 255, 248)",
      "toolbar_top_separator": "rgb(255, 0, 4)",
      "tab_loading": "rgb(255, 0, 53)"
    }
  }
}