Examine source code of Custom Green9

{
  "theme": {
    "images": {
      "theme_frame": "glass-green.png"
    },
    "colors": {
      "frame": "#ffffff",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "Custom Green9",
  "manifest_version": 2,
  "description": "Just an edited version of another Persona I liked, but hated that the accent color wasn't white."
}