Examine source code of Heart in Hand by MaDonna

{
  "name": "Heart in Hand by MaDonna",
  "manifest_version": 2,
  "version": "5.0",
  "theme": {
    "images": {
      "theme_frame": "heartinhandH1.jpg"
    },
    "colors": {
      "frame": "rgba(87, 86, 84, 1)",
      "tab_background_text": "rgba(255, 255, 255, 1)",
      "toolbar": "rgba(0, 0, 0, 0)",
      "bookmark_text": "rgba(255, 255, 255, 1)",
      "toolbar_field": "rgba(87, 86, 84, 0.09)",
      "toolbar_field_text": "rgba(255, 255, 255, 1)",
      "tab_line": "rgba(158, 12, 12, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{d8892fa8-87b0-462c-8836-8353844915db}"
    }
  }
}