Examine source code of Tron theme orange

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Tron theme orange",
  "description": "Tron theme dark with secondary color orange",
  "icons": {
    "300": "icon.jpg"
  },
  "theme": {
    "images": {
      "theme_frame": "background.jpg"
    },
    "colors": {
      "frame": "#f00",
      "popup": "rgba(21,21,21,0.9)",
      "popup_text": "rgb(255,180,18)",
      "popup_highlight": "rgb(255,180,50)",
      "popup_highlight_text": "rgba(0,0,0)",
      "toolbar": "rgba(0,0,0,0.7)",
      "toolbar_field": "rgba(0,0,0, 0.4)",
      "toolbar_field_highlight": "rgb(255,180,18)",
      "toolbar_field_highlight_text": "#000",
      "toolbar_field_text": "#fff",
      "toolbar_field_text_focus": "#fff",
      "toolbar_field_separator": "rgba(255,180,18,0.6)",
      "toolbar_field_focus": "rgba(0,0,0,0.5)",
      "toolbar_field_border_focus": "rgba(255,180,18, 0.6)",
      "toolbar_vertical_separator": "rgba(255,180,18,0.3)",
      "tab_text": "rgb(255,255,255)",
      "tab_line": "rgb(255,180,18)",
      "tab_loading": "rgb(255,180,18)",
      "tab_background_text": "#fff",
      "tab_background_separator": "rgba(255,180,18,1)",
      "ntp_background": "rgb(48,48,48)",
      "ntp_text": "rgb(255,180,18)",
      "sidebar": "rgb(21,21,21)",
      "sidebar_highlight": "rgb(255,180,18)",
      "sidebar_highlight_text": "#000",
      "sidebar_text": "rgb(255,180,18)",
      "sidebar_border": "rgb(255,180,18)",
      "icons": "rgb(255,180,18)",
      "icons_attention": "#fff",
      "bookmark_text": "rgb(255,180,18)",
      "button_background_hover": "rgba(255,180,18,0.2)",
      "button_background_active": "rgba(255,180,18,0.3)"
    }
  }
}