Examine source code of Color Polygon X

{
  "name": "Color Polygon X",
  "manifest_version": 2,
  "version": "2.0",
  "theme": {
    "images": {
      "theme_frame": "low-poly-vector-23.jpg"
    },
    "colors": {
      "frame": "rgba(255, 255, 255, 1)",
      "tab_background_text": "rgba(217, 217, 217, 1)",
      "toolbar": "rgba(64, 50, 50, 0.47)",
      "bookmark_text": "rgba(255, 255, 255, 1)",
      "toolbar_field": "rgba(252, 252, 252, 0.59)",
      "toolbar_field_text": "rgba(0, 0, 0, 1)"
    }
  }
}