Examine source code of Blue Color Surfer

{
  "name": "Color Surfer",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "Screenshot 2022-01-23 115828.png"
    },
    "colors": {
      "frame": "rgba(36, 82, 191, 1)",
      "tab_background_text": "rgba(207, 15, 217, 1)",
      "toolbar": "rgba(3, 242, 250, 1)",
      "bookmark_text": "rgba(21, 255, 0, 1)",
      "toolbar_field": "rgba(16, 143, 122, 1)",
      "toolbar_field_text": "rgba(8, 0, 232, 1)",
      "tab_line": "rgba(255, 0, 0, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{111fc4f7-a7ae-47cc-9c2d-fdd658380e03}"
    }
  }
}