Examine source code of Neco-Arc

{
  "name": "Neco-Arc",
  "manifest_version": 2,
  "version": "2.0",
  "theme": {
    "images": {
      "theme_frame": "ezgif-4-ecdbe396ac87.png"
    },
    "colors": {
      "frame": "rgba(255, 216, 110, 0.2)",
      "tab_background_text": "rgba(0, 0, 0, 1)",
      "toolbar": "rgba(207, 141, 67, 0.49)",
      "bookmark_text": "rgba(133, 82, 132, 1)",
      "toolbar_field": "rgba(255, 255, 255, 0.65)",
      "toolbar_field_text": "rgba(207, 141, 67, 1)",
      "tab_line": "rgba(255, 215, 105, 1)"
    }
  }
}