Examine source code of Black and white lines

{
  "theme": {
    "images": {
      "theme_frame": "header.png"
    },
    "colors": {
      "frame": "#000000",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "Black and white lines",
  "manifest_version": 2,
  "description": "Pretty simple, really. Just some black and white lines, and some red thrown in to go where the URL bar and UI buttons go. Works great with Quantum, probably doesn't work all that well with old firefox."
}