Examine source code of RYO.CH Grid

{
  "name": "RYO.CH Grid",
  "manifest_version": 2,
  "version": "3.0",
  "theme": {
    "images": {
      "theme_frame": "RYO.CH Grid.png"
    },
    "colors": {
      "frame": "rgba(245, 205, 47, 1)",
      "tab_background_text": "rgba(0, 0, 0, 1)",
      "tab_line": "rgba(132, 239, 247, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{20d9c6c7-c974-4163-b631-8f9dde93258a}"
    }
  }
}