Examine source code of Welsh Forests 2

{
  "name": "Welsh Forests 2",
  "manifest_version": 2,
  "version": "3.0",
  "theme": {
    "images": {
      "theme_frame": "Persona_Headerforest2.jpg"
    },
    "colors": {
      "frame": "rgba(74, 117, 77, 1)",
      "tab_background_text": "rgba(255, 255, 255, 1)"
    }
  }
}