Examine source code of Brighter bookmark bar

{
  "theme": {
    "images": {
      "theme_frame": "brighterbookmarkbar.jpg"
    },
    "colors": {
      "frame": "rgba(229,230,232,1)",
      "tab_background_text": "#000000"
    }
  },
  "version": "2.0",
  "name": "Brighter bookmark bar",
  "manifest_version": 2,
  "description": "Wanted a brighter bookmark bar, thought it was hard to read with the default one, that I find too dark. Thats it!"
}