Examine source code of Space Spurdo v2

{
  "name": "gondola in space",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "gondola in space.png"
    },
    "colors": {
      "frame": "rgba(229, 230, 232, 1)",
      "tab_background_text": "rgba(230, 166, 225, 0.89)",
      "toolbar": "rgba(51, 51, 51, 0.31)",
      "bookmark_text": "rgba(235, 159, 229, 1)",
      "toolbar_field": "rgba(74, 60, 82, 0.23)",
      "toolbar_field_text": "rgba(250, 195, 245, 0.3)"
    }
  }
}