Examine source code of deepblue simple

{
  "manifest_version": 2,
  "version": "2.0",
  "name": "deepblue simple",
  "theme": {
    "images": {},
    "properties": {},
    "colors": {
      "toolbar": "rgba(255, 255, 255, 0.18)",
      "toolbar_text": "rgb(218, 218, 218)",
      "frame": "rgb(0, 73, 102)",
      "tab_background_text": "rgb(218, 218, 218)",
      "toolbar_field": "rgba(255, 255, 255, 0.72)",
      "toolbar_field_text": "rgb(0, 0, 0)",
      "tab_line": "rgba(255, 255, 255, 0)",
      "popup": "rgb(244, 244, 244)",
      "popup_text": "rgb(0, 0, 0)",
      "icons_attention": "rgb(0, 181, 235)",
      "toolbar_field_border_focus": "rgba(255, 255, 255, 0)",
      "toolbar_field_border": "rgba(255, 255, 255, 0)",
      "toolbar_top_separator": "rgba(255, 255, 255, 0)",
      "tab_loading": "rgba(255, 255, 255, 0)"
    }
  }
}