Examine source code of Pumpkin Harvest

{
  "name": "Pumpkin Harvest",
  "manifest_version": 2,
  "version": "3.0",
  "theme": {
    "images": {
      "theme_frame": "PumpkinHarvest.jpg"
    },
    "colors": {
      "frame": "#edd8e3",
      "tab_background_text": "rgba(145, 49, 120, 1)",
      "toolbar": "rgba(204, 151, 177, 0.13)",
      "bookmark_text": "rgba(71, 0, 53, 1)",
      "toolbar_field": "rgba(0, 0, 0, 0)",
      "toolbar_field_text": "rgba(148, 0, 72, 1)"
    }
  }
}