Examine source code of Pastel No.1

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Pastel No.1",
  "theme": {
    "images": {},
    "properties": {},
    "colors": {
      "toolbar": "rgb(171, 176, 179)",
      "toolbar_text": "rgb(206, 20, 58)",
      "frame": "rgb(160, 201, 142)",
      "tab_background_text": "rgb(255, 255, 255)",
      "toolbar_field": "rgb(255, 255, 255)",
      "toolbar_field_text": "rgb(14, 14, 116)",
      "tab_line": "rgb(255, 152, 0)",
      "popup": "rgba(255, 255, 255, 0.19)",
      "popup_text": "rgb(0, 0, 0)",
      "tab_loading": "rgb(255, 152, 0)"
    }
  }
}