Examine source code of Neon Heart

{
  "name": "Nural Heart",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "Neon.png"
    },
    "colors": {
      "frame": "rgba(1, 20, 0, 0.32)",
      "tab_background_text": "rgba(255, 255, 255, 1)",
      "toolbar": "rgba(143, 143, 143, 1)",
      "bookmark_text": "rgba(204, 204, 204, 1)",
      "toolbar_field": "rgba(209, 209, 209, 1)",
      "toolbar_field_text": "rgba(102, 102, 102, 1)"
    }
  }
}