Examine source code of GET_SIMPLEPLAN

{
  "theme": {
    "images": {
      "theme_frame": "SPGET1.JPG"
    },
    "colors": {
      "frame": "#fa0a0a",
      "tab_background_text": "#fa0a0a"
    }
  },
  "version": "2.0",
  "name": "GET_SIMPLEPLAN",
  "manifest_version": 2
}