Examine source code of Chill Grey Dark

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Chill Gray Dark",
  "theme": {
    "images": {},
    "properties": {},
    "colors": {
      "toolbar": "rgba(84, 91, 98, 0.8)",
      "toolbar_text": "rgba(222, 223, 226, 0.8)",
      "frame": "rgb(51, 56, 60)",
      "tab_background_text": "rgb(255, 255, 255)",
      "toolbar_field": "rgba(121, 129, 138, 0.8)",
      "toolbar_field_text": "rgba(255, 255, 255, 0.8)",
      "tab_line": "rgba(151, 163, 175, 0.8)",
      "popup": "rgba(51, 56, 60, 0.8)",
      "popup_text": "rgba(255, 255, 255, 0.8)",
      "tab_loading": "rgba(151, 163, 175, 0.8)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{08765736-878d-4c2c-88f7-188b4f90e746}"
    }
  }
}