Examine source code of Respect For Spring

{
  "name": "Respect For Spring",
  "manifest_version": 2,
  "version": "3.0",
  "theme": {
    "images": {
      "theme_frame": "respectforspringH.jpg"
    },
    "colors": {
      "frame": "rgba(26, 150, 245, 1)",
      "tab_background_text": "rgba(255, 255, 255, 1)",
      "toolbar": "rgba(24, 143, 247, 0)",
      "bookmark_text": "rgba(255, 255, 255, 1)",
      "toolbar_field": "rgba(24, 143, 247, 0.1)",
      "toolbar_field_text": "rgba(255, 255, 255, 1)",
      "tab_line": "rgba(255, 255, 255, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{779a65e6-1606-4f10-bc47-38d8dda1462c}"
    }
  }
}