Examine source code of Plain White Minimal Light

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Plain White Minimal Light",
  "theme": {
    "images": {},
    "properties": {},
    "colors": {
      "toolbar": "rgb(255, 255, 255)",
      "toolbar_text": "rgb(34, 34, 34)",
      "frame": "rgb(245, 245, 245)",
      "tab_background_text": "rgb(84, 84, 84)",
      "toolbar_field": "rgb(245, 245, 245)",
      "toolbar_field_text": "rgb(34, 34, 34)",
      "tab_line": "rgb(203, 203, 203)",
      "popup": "rgb(255, 255, 255)",
      "popup_text": "rgb(34, 34, 34)",
      "button_background_hover": "rgba(17, 85, 255, 0.1)",
      "icons_attention": "rgb(17, 85, 255)",
      "popup_border": "rgb(238, 243, 255)",
      "popup_highlight_text": "rgb(17, 85, 255)",
      "popup_highlight": "rgb(238, 243, 255)",
      "sidebar_highlight_text": "rgb(17, 85, 255)",
      "sidebar_highlight": "rgb(238, 243, 255)",
      "tab_loading": "rgb(17, 85, 255)",
      "tab_text": "rgb(0, 0, 0)",
      "toolbar_bottom_separator": "rgb(219, 219, 219)",
      "toolbar_field_border_focus": "rgb(17, 85, 255)",
      "toolbar_field_border": "rgb(255, 255, 255)",
      "toolbar_field_focus": "rgb(255, 255, 255)",
      "toolbar_field_highlight_text": "rgb(238, 243, 255)",
      "toolbar_field_highlight": "rgb(17, 85, 255)",
      "toolbar_top_separator": "rgb(219, 219, 219)"
    }
  }
}