Examine source code of Glass - Ruby

{
  "theme": {
    "images": {
      "theme_frame": "Glass_Ruby_top.png"
    },
    "colors": {
      "frame": "#cccccc",
      "tab_background_text": "#000000"
    }
  },
  "version": "2.0",
  "name": "Glass - Ruby",
  "manifest_version": 2,
  "description": "Simple clean glass effect with color accents."
}