Examine source code of salesforce.com

{
  "theme": {
    "images": {
      "theme_frame": "salesforce-header2.jpg"
    },
    "colors": {
      "frame": "#363636",
      "tab_background_text": "#000000"
    }
  },
  "version": "2.0",
  "name": "salesforce.com",
  "manifest_version": 2,
  "description": "Salesforce.com is the worldwide leader in on-demand customer relationship management (CRM) services. More companies trust their vital customer and sales data to salesforce.com than any other on-demand CRM company in the world."
}