Examine source code of Decay-Modified

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Decay-Modified",
  "theme": {
    "images": {},
    "properties": {},
    "colors": {
      "toolbar": "rgb(26, 30, 36)",
      "toolbar_text": "rgb(222, 225, 230)",
      "frame": "rgb(23, 27, 32)",
      "tab_background_text": "rgb(182, 190, 202)",
      "toolbar_field": "rgb(23, 27, 32)",
      "toolbar_field_text": "rgb(182, 190, 202)",
      "tab_line": "rgba(182, 190, 202, 0)",
      "popup": "rgb(33, 38, 46)",
      "popup_text": "rgb(182, 190, 202)",
      "ntp_background": "rgb(23, 27, 32)",
      "tab_loading": "rgba(182, 190, 202, 0)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{b29b12d1-3767-4f0b-a5b9-acdd4d28ec09}"
    }
  }
}