Examine source code of Rainbow-y Persona

{
  "theme": {
    "images": {
      "theme_frame": "rainbowrainbow.jpg"
    },
    "colors": {
      "frame": "#1115de",
      "tab_background_text": "#14d921"
    }
  },
  "version": "2.0",
  "name": "Rainbow-y Persona",
  "manifest_version": 2,
  "description": "Rainbow across your persona"
}