Examine source code of harish5p firefox theme

{
  "theme": {
    "images": {
      "theme_frame": "header.png"
    },
    "colors": {
      "frame": "#2b0a0a",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "harish5p firefox theme",
  "manifest_version": 2,
  "description": "logo h5p with solid brown\n\nWhy? Because I couldn't find a brown color theme when I searched for it, so I created my own. Try it."
}