Examine source code of ppg buttercup

{
  "theme": {
    "images": {
      "theme_frame": "dsfews.png"
    },
    "colors": {
      "frame": "#56e61e",
      "tab_background_text": "#3fe326"
    }
  },
  "version": "2.0",
  "name": "ppg buttercup",
  "manifest_version": 2,
  "description": "this is made by me"
}