Examine source code of Airforce Collage

{
  "theme": {
    "images": {
      "theme_frame": "airforce3.png"
    },
    "colors": {
      "frame": "#16289c",
      "tab_background_text": "#071de6"
    }
  },
  "version": "2.0",
  "name": "Airforce Collage",
  "manifest_version": 2,
  "description": "Just a simple collage i made when i was bored. it has 3 different planes blended together."
}