Examine source code of Blue dimples

{
  "theme": {
    "images": {
      "theme_frame": "blue-dimples-header.jpg"
    },
    "colors": {
      "frame": "#45c4de",
      "tab_background_text": "#e1f1f2"
    }
  },
  "version": "2.0",
  "name": "Blue dimples",
  "manifest_version": 2,
  "description": "Blue dimples"
}