Examine source code of V by MathLibres

{
  "theme": {
    "images": {
      "theme_frame": "V.jpg"
    },
    "colors": {
      "frame": "#121ea3",
      "tab_background_text": "#1d0db3"
    }
  },
  "version": "2.0",
  "name": "V by MathLibres",
  "manifest_version": 2,
  "description": "We are of peace. Always."
}