Examine source code of Galloping Rainbows

{
  "theme": {
    "images": {
      "theme_frame": "Galloping_Rainbows.png"
    },
    "colors": {
      "frame": "#7874ed",
      "tab_background_text": "#6e14a6"
    }
  },
  "version": "2.0",
  "name": "Galloping Rainbows",
  "manifest_version": 2,
  "description": "I was experimenting with file sizes and richly colored gradients again, and I stopped in mid experiment when I saw this pattern.  I was able to get the file size below 300 KB and here is the result.    As Bob Ross, the Joy of Painting Artist used to say, this persona was a  “Happy Accident.”  I wish he was still living. I am dedicating this persona to him. c0l1\n\nAn original Abstract design by CollieSmile"
}