Examine source code of RockabillyGun1

{
  "theme": {
    "images": {
      "theme_frame": "Rtest1.png"
    },
    "colors": {
      "frame": "#000000",
      "tab_background_text": "#de8021"
    }
  },
  "version": "2.0",
  "name": "RockabillyGun1",
  "manifest_version": 2,
  "description": "Rockabilly, Gun, Psychobilly, Pin Up, Lucky 13, Lucky Thirteen, Pumpgun, Dice"
}