Examine source code of We Can Do It

{
  "theme": {
    "images": {
      "theme_frame": "rosie.PNG"
    },
    "colors": {
      "frame": "#2474bf",
      "tab_background_text": "#221f6b"
    }
  },
  "version": "2.0",
  "name": "We Can Do It",
  "manifest_version": 2,
  "description": "This persona is adapted from J. Howard Miller's iconic 1942 We Can Do It! poster, which is now usually associated with Rosie the Riveter. This poster is in the public domain."
}