Examine source code of Spring Arrival by M♥Donna

{
  "name": "Spring Arrival by M♥Donna",
  "manifest_version": 2,
  "version": "2.0",
  "theme": {
    "images": {
      "theme_frame": "Spring ArrivalT3.jpg"
    },
    "colors": {
      "frame": "rgba(16, 13, 28, 1)",
      "tab_background_text": "rgba(255, 250, 184, 1)",
      "toolbar": "rgba(0, 0, 0, 0)",
      "bookmark_text": "rgba(255, 250, 184, 1)",
      "toolbar_field": "rgba(16, 13, 28, 0.09)",
      "toolbar_field_text": "rgba(255, 250, 184, 1)",
      "tab_line": "rgba(255, 250, 184, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{158c3d2d-872f-4b82-911a-555c4cd3f9e3}"
    }
  }
}