Examine source code of something_blue

{
  "theme": {
    "images": {
      "theme_frame": "something_blue.jpg"
    },
    "colors": {
      "frame": "#000429",
      "tab_background_text": "#c2f2ff"
    }
  },
  "version": "2.0",
  "name": "something_blue",
  "manifest_version": 2
}