Examine source code of Marines

{
  "theme": {
    "images": {
      "theme_frame": "MarinesTop.png"
    },
    "colors": {
      "frame": "#4f4b4b",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "Marines",
  "manifest_version": 2,
  "description": "The Marines.\nLove them."
}