Examine source code of The Yellow One

{
  "name": "The Yellow One",
  "manifest_version": 2,
  "version": "4.0",
  "theme": {
    "images": {
      "theme_frame": "yellow.png"
    },
    "colors": {
      "frame": "rgba(173, 173, 173, 1)",
      "tab_background_text": "rgba(255, 255, 255, 1)",
      "toolbar": "rgba(204, 171, 94, 0.47)",
      "bookmark_text": "rgba(0, 0, 0, 1)",
      "toolbar_field": "rgba(191, 191, 191, 1)",
      "toolbar_field_text": "rgba(3, 3, 3, 1)",
      "tab_line": "rgba(255, 242, 0, 0.46)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{92d196b4-a672-40d5-8402-408639d5c624}"
    }
  }
}