Examine source code of Arc Dark Flat

{
  "manifest_version": 2,
  "name": "Arc Dark Flat",
  "version": "1.0",
  "theme": {
    "colors": {
      "frame": "#2F343F",
      "tab_background_text": "#7C818C",
      "tab_background_separator": "#2F343F",
      "toolbar": "#2F343F",
      "bookmark_text": "#D3DAE3",
      "toolbar_top_separator": "#2F343F",
      "toolbar_bottom_separator": "#262932",
      "tab_line": "#5294E2",
      "tab_loading": "#5294E2",
      "toolbar_field": "#2C313B",
      "toolbar_field_text": "#B7BDC4",
      "toolbar_field_border": "#2F343F",
      "toolbar_field_focus": "#2C313B",
      "toolbar_field_text_focus": "#79B1F2",
      "toolbar_field_border_focus": "#2F343F",
      "icons_attention": "#5294E2",
      "button_background_hover": "#434954",
      "button_background_active": "#525866",
      "popup": "#383C4A",
      "popup_text": "#D3DAE3",
      "ntp_background": "#2C313B",
      "ntp_text": "#D3DAE3"
    }
  }
}