Examine source code of Orange Highlights

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Orange Highlights",
  "theme": {
    "images": {},
    "properties": {},
    "colors": {
      "toolbar": "rgb(25, 20, 13)",
      "toolbar_text": "rgb(255, 159, 0)",
      "frame": "rgb(0, 0, 0)",
      "tab_background_text": "rgb(255, 159, 0)",
      "toolbar_field": "rgb(0, 0, 0)",
      "toolbar_field_text": "rgb(255, 159, 0)",
      "tab_line": "rgb(255, 159, 0)",
      "popup": "rgb(0, 0, 0)",
      "popup_text": "rgb(255, 159, 0)",
      "icons_attention": "rgb(255, 159, 0)",
      "ntp_background": "rgb(25, 20, 13)",
      "popup_border": "rgb(255, 159, 0)",
      "popup_highlight_text": "rgb(255, 159, 0)",
      "popup_highlight": "rgb(78, 49, 0)",
      "tab_text": "rgb(255, 255, 255)",
      "toolbar_bottom_separator": "rgb(255, 159, 0)",
      "toolbar_field_border_focus": "rgb(255, 159, 0)",
      "toolbar_field_border": "rgb(255, 159, 0)",
      "toolbar_field_highlight": "rgb(78, 49, 0)",
      "toolbar_field_text_focus": "rgb(255, 159, 0)",
      "tab_loading": "rgb(255, 159, 0)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{75dade0f-90c6-45e7-918c-a79eca3913b9}"
    }
  }
}