Examine source code of Arknights

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Arknights",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.jpg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "center center"
      ],
      "additional_backgrounds_tiling": [
        "no-repeat"
      ]
    },
    "colors": {
      "toolbar": "rgba(255, 183, 146, 0)",
      "toolbar_text": "rgb(249, 165, 127)",
      "frame": "rgb(0, 21, 26)",
      "tab_background_text": "rgb(212, 192, 253)",
      "toolbar_field": "rgba(249, 165, 127, 0.23)",
      "toolbar_field_text": "rgb(212, 192, 253)",
      "tab_line": "rgb(249, 165, 127)",
      "popup": "rgba(212, 192, 253, 0.6)",
      "popup_text": "rgb(0, 0, 0)",
      "popup_border": "rgb(0, 0, 0)",
      "popup_highlight_text": "rgb(0, 0, 0)",
      "sidebar_highlight_text": "rgb(255, 0, 0)",
      "tab_selected": "rgba(0, 0, 0, 0.29)",
      "toolbar_bottom_separator": "rgb(0, 0, 0)",
      "toolbar_field_border_focus": "rgb(0, 0, 0)",
      "toolbar_field_border": "rgb(0, 0, 0)",
      "toolbar_field_focus": "rgba(255, 167, 125, 0.15)",
      "toolbar_field_highlight": "rgba(53, 53, 53, 0.85)",
      "toolbar_field_separator": "rgba(0, 0, 0, 0.85)",
      "toolbar_top_separator": "rgb(0, 0, 0)",
      "toolbar_vertical_separator": "rgb(0, 0, 0)",
      "tab_loading": "rgb(249, 165, 127)"
    }
  }
}