Examine source code of Chromium Light

{
  "browser_specific_settings": {
    "gecko": {
      "id": "chromium-light-theme@spacegamedev",
      "strict_min_version": "42.0"
    }
  },
  "manifest_version": 3,
  "version": "1.0",
  "name": "Chromium Light",
  "theme": {
    "colors": {
      "frame": "#dee1e6",
      "frame_inactive": "#e8eaed",
      "tab_background_separator": "#8a8d90",
      "tab_background_text": "#5f6368",
      "toolbar_field_highlight": "#9bc4f0",
      "toolbar_field_highlight_text": "#000000",
      "toolbar_field_text": "#000000",
      "toolbar_field_text_focus": "#000000",
      "toolbar_field": "#f1f3f4",
      "toolbar_field_focus": "#ffffff",
      "toolbar_field_border": "#00000000",
      "toolbar_field_border_focus": "#227adf",
      "tab_loading": "#227adf",
      "tab_text": "#5f6368",
      "bookmark_text": "#5f6368",
      "tab_selected": "#ffffff",
      "toolbar": "#ffffff",
      "tab_line": "#00000000",
      "button_background_active": "#eeeeee",
      "button_background_hover": "#eeeeee",
      "toolbar_top_separator": "#00000000",
      "toolbar_vertical_separator": "#dadbdc",
      "toolbar_bottom_separator": "#dadbdc",
      "popup_highlight": "#227adf",
      "popup_highlight_text": "#5f6368",
      "popup": "#ffffff",
      "popup_border": "#00000000",
      "ntp_background": "#ffffff",
      "ntp_text": "#5f6368",
      "sidebar_border": "#00000000",
      "sidebar": "#ffffff",
      "sidebar_text": "#5f6368",
      "sidebar_highlight": "#227adf",
      "icons": "#5f6368",
      "icons_attention": "#5f6368"
    }
  }
}