Examine source code of Glass Amber

{
  "theme": {
    "images": {
      "theme_frame": "Amber.jpg"
    },
    "colors": {
      "frame": "#e0cf8d",
      "tab_background_text": "#2b2105"
    }
  },
  "version": "2.0",
  "name": "Glass Amber",
  "manifest_version": 2,
  "description": "Rich bubbly glass Amber glowing in sunlight"
}